Nabta Playa
Encyclopedia
Nabta Playa was once a large basin
in the Nubian Desert
, located approximately 800 kilometers south of modern day Cairo
or about 100 kilometers west of Abu Simbel
in southern Egypt
, 22° 32' north, 30° 42' east. Today the region is characterized by numerous archaeological sites.
and early last glaciation periods which stretched between 130,000 and 70,000 years ago. During this time, the area was a savanna
and supported numerous animals such as extinct buffalo and large giraffes, varieties of antelope and gazelle.
Beginning around the 10th millennium BC
, this region of the Nubian Desert
began to receive more rainfall, filling a lake. Early people may have been attracted to the region due to the source of water.
Archaeological findings may indicate human occupation in the region dating to at least somewhere around the 10th
and 8th millennia BC
. Fred Wendorf
and Christopher Ehret
have suggested that the people who occupied this region at that time were early pastoralists, or like the Saami
practiced semi-pastoralism (although this is disputed by other sources because the cattle remains found at Nabta have been shown to be morphologically wild in several studies, and nearby Saharan sites such as Uan Afada in Libya were penning wild Barbary sheep
, an animal that was never domesticated). The people of that time consumed and stored wild sorghum, and used ceramic
s adorned by complicated paint
ed patterns created perhaps by using comb
s made from fish bone.
By the 7th millennium BC
, exceedingly large and organized settlements
were found in the region, relying on deep wells
for sources of water. Hut
s were constructed in straight row
s. Sustenance included fruit
, legumes, millet
s, sorghum
and tuber
s.
Also in the late 7th millennium BC
, but a little later than the time referred to above, imported goat
s and sheep, apparently from Southwest Asia
http://www.comp-archaeology.org/WendorfSAA98.html, appear. Many large hearth
s also appear.
peoples led livelihoods seemingly at a higher level of organization than their contemporaries who lived closer to the Nile Valley
. The people of Nabta Playa had:
Findings also indicate that the region was occupied only seasonally, most likely only in the summer
period, when the local lake filled with water for grazing cattle
. Analysis of human remains based on osteological
data suggests a subsaharan origin or related to the Mushabian
desert peoples that later migrated to other less dry regions north, Capsian culture
and east, to the Levante and south, towards Ethiopia and the Horn of Africa.
, evidence of a prehistoric religion
or cult
appears, with a number of sacrifice
d cattle buried in stone
-roofed chambers lined with clay
. It has been suggested that the associated cattle
cult
indicated in Nabta Playa marks an early evolution of Ancient Egypt
's Hathor
cult
. For example, Hathor was worshipped as a nighttime protector in desert regions (see Serabit el-Khadim
). To directly quote professors Wendorf and Schild:
Nevertheless, though the religious practices of the region involving cattle suggest ties to Ancient Egypt
, Egyptologist Mark Lehner
cautions:
Other subterranean complexes are also found in Nabta Playa, one of which included evidence of perhaps an early Egyptian attempt at sculpture
.
these peoples had fashioned one of the world's earliest known archeoastronomical devices (roughly contemporary to the Goseck circle
in Germany and the Mnajdra
megalithic temple complex in Malta). Research suggests that it may have been a prehistoric "calendar
" marking the summer
solstice
.
as they appeared in the sky. These correspondences were for two dates—circa 4,800 BC and at precessional opposition—representing how the sky "moves" long term. Brophy proposes that the circle was constructed and used circa the later date, and the dual date representation was a conceptual representation of the motion of the sky over a precession cycle.
Near the calendar circle, which is made of smaller stones, there are alignments of large megalithic stones. The southerly lines of these megaliths, Brophy shows, aligned to the same stars as represented in the calendar circle, all at the same epoch, circa 6270 BC. The calendar circle correlation with Orion's belt occurred between 6400 BC and 4900 BC, matching the radio-carbon dating of campfires around the circle.
About these, he wrote “The companion megaliths in each distance alignment match corresponding megaliths in each velocity alignment in such a way as to fit the physics of orbital motion, and thus probably represent actual companion objects to the six primary stars. Meaning: The designers of the megaliths had a basic understanding of physics, and knowledge of astronomy that rivaled or surpassed ours today.”.
in 6088 and other alignments which they dated to 6270, saying that these dates were about 1500 years earlier than the estimated dates. The Sirius alignment in question was originally proposed by Wendorf and Malville, for one of the most prominent alignments of megaliths labelled the "C-line", which they said aligned to the rising of Sirius circa 4820 BC. Brophy and Rosen showed in 2005 that megalith orientations and star positions reported by Wendorf and Malville were in error, noting that "Given these corrected data, we see that Sirius actually aligned with the C line circa 6000 BC. We estimate that 6088 BC Sirius had a declination of -36.51 deg, for a rising azimuth exactly on the C-line average". Malville acknowledged the corrections made by Brophy and Rosen, but concluded the C-line of megaliths "may not represent an original set of aligned stele; we refrain from interpreting that alignment."
They also criticised suggestions made by Brophy in his book The Origin Map that there was a representation of the Milky Way
as it was in 17,500 BC and maps of Orion at 16500 BC, saying "These extremely early dates as well as the proposition that the nomads had contact with extra galactic aliens are inconsistent with the archaeological record. Inference in archaeoastronomy must always be guided and informed by archaeology, especially when substantial field work has been performed in the region.
They propose that the area was first used as what they call a 'regional ceremonial centre' around 6100 to 5600 BC with people coming from various locations to gather on ta dune on the playa where there is archaeological evidence for gatherings which involved large numbers of cattle bones, as cattle were normally only killed on important occasions. Around 5500 BC a new, more organised group began to use the site, burying cattle in clay-lined chambers and building other tumuli. Around 4800 BC a cromlech or stone circle was constructed, with narrow slabs approximately aligned with the summer solstice, near the beginning of the rainy season.
More complex structures followed during a megalith period the researchers dated to between about 4500 BC to 3600 BC. Using their original measurements and measurements by satellite and GPRS measurements by Brophy and Rosen they confirmed possible alignments with Sirius, Arcturus, Alpha Centauri
and the Belt of Orion. They suggest that there are three pieces of evidence suggesting astronomical observations by the herdsmen using the site, which may have functioned as a necropolis
. "The repetitive orientation of megaliths, stele, human burials and cattle burials reveals a very early symbolic connection to the north." Secondly, there is the orientation of the cromlech mentioned above. The third piece of evidence is the fifth millennium alignments of stele to bright stars.
They conclude their report by writing that "The symbolism embedded in the archaeological record of Nabta Playa in the Fifth Millennium BC is very basic, focussed on issues of major practical importance to the nomads: cattle, water, death, earth, sun and stars."
Depression (geology)
A depression in geology is a landform sunken or depressed below the surrounding area. Depressions may be formed by various mechanisms.Structural or tectonic related:...
in the Nubian Desert
Nubian Desert
The Nubian Desert is in the eastern region of the Sahara Desert, spanning approximately 400,000 km² of northeastern Sudan between the Nile and the Red Sea. The arid region, a largely sandstone plateau, has lots of wadis flowing towards the Nile. There is virtually no rainfall in the Nubian,...
, located approximately 800 kilometers south of modern day Cairo
Cairo
Cairo , is the capital of Egypt and the largest city in the Arab world and Africa, and the 16th largest metropolitan area in the world. Nicknamed "The City of a Thousand Minarets" for its preponderance of Islamic architecture, Cairo has long been a centre of the region's political and cultural life...
or about 100 kilometers west of Abu Simbel
Abu Simbel
Abu Simbel temples refers to two massive rock temples in Abu Simbel in Nubia, southern Egypt on the western bank of Lake Nasser about 230 km southwest of Aswan...
in southern Egypt
Egypt
Egypt , officially the Arab Republic of Egypt, Arabic: , is a country mainly in North Africa, with the Sinai Peninsula forming a land bridge in Southwest Asia. Egypt is thus a transcontinental country, and a major power in Africa, the Mediterranean Basin, the Middle East and the Muslim world...
, 22° 32' north, 30° 42' east. Today the region is characterized by numerous archaeological sites.
Early history
Although at present the western Egyptian desert is totally dry, this was not the case in the past. There is good evidence that there were several humid periods in the past (when up to 500 mm of rain would fall per year) the most recent one during the last interglacialInterglacial
An Interglacial period is a geological interval of warmer global average temperature lasting thousands of years that separates consecutive glacial periods within an ice age...
and early last glaciation periods which stretched between 130,000 and 70,000 years ago. During this time, the area was a savanna
Savanna
A savanna, or savannah, is a grassland ecosystem characterized by the trees being sufficiently small or widely spaced so that the canopy does not close. The open canopy allows sufficient light to reach the ground to support an unbroken herbaceous layer consisting primarily of C4 grasses.Some...
and supported numerous animals such as extinct buffalo and large giraffes, varieties of antelope and gazelle.
Beginning around the 10th millennium BC
10th millennium BC
The 10th millennium BC marks the beginning of the Mesolithic and Epipaleolithic period, which is the first part of the Holocene epoch. Agriculture, based on the cultivation of primitive forms of millet and rice, occurred in Southwest Asia...
, this region of the Nubian Desert
Nubian Desert
The Nubian Desert is in the eastern region of the Sahara Desert, spanning approximately 400,000 km² of northeastern Sudan between the Nile and the Red Sea. The arid region, a largely sandstone plateau, has lots of wadis flowing towards the Nile. There is virtually no rainfall in the Nubian,...
began to receive more rainfall, filling a lake. Early people may have been attracted to the region due to the source of water.
Archaeological findings may indicate human occupation in the region dating to at least somewhere around the 10th
10th millennium BC
The 10th millennium BC marks the beginning of the Mesolithic and Epipaleolithic period, which is the first part of the Holocene epoch. Agriculture, based on the cultivation of primitive forms of millet and rice, occurred in Southwest Asia...
and 8th millennia BC
8th millennium BC
In the 8th millennium BC, agriculture became widely practised in the Fertile Crescent and Anatolia.Pottery became widespread and animal husbandry spread to Africa and Eurasia. World population was approximately 5 million.-Events:*c. 8000 BC—The last glacial period ends.*c...
. Fred Wendorf
Fred Wendorf
Fred Wendorf is Henderson-Morrison Professor of Anthropology at Southern Methodist University. He received his Ph.D. in 1953 from Harvard University, and founded the anthropology department at SMU along with founding the Fort Burgwin Research Center in Taos, New Mexico.Dr...
and Christopher Ehret
Christopher Ehret
Christopher Ehret , a professor at the University of California at Los Angeles, is a writer on African history and African historical linguistics, particularly known for his efforts to correlate linguistic taxonomy and reconstruction with the archeological record...
have suggested that the people who occupied this region at that time were early pastoralists, or like the Saami
Sami people
The Sami people, also spelled Sámi, or Saami, are the arctic indigenous people inhabiting Sápmi, which today encompasses parts of far northern Sweden, Norway, Finland, the Kola Peninsula of Russia, and the border area between south and middle Sweden and Norway. The Sámi are Europe’s northernmost...
practiced semi-pastoralism (although this is disputed by other sources because the cattle remains found at Nabta have been shown to be morphologically wild in several studies, and nearby Saharan sites such as Uan Afada in Libya were penning wild Barbary sheep
Barbary sheep
The Barbary Sheep is a species of caprid native to rocky mountains in North Africa. Six subspecies have been described. Although it is rare in its native North Africa, it has been introduced to North America, southern Europe and elsewhere...
, an animal that was never domesticated). The people of that time consumed and stored wild sorghum, and used ceramic
Ceramic
A ceramic is an inorganic, nonmetallic solid prepared by the action of heat and subsequent cooling. Ceramic materials may have a crystalline or partly crystalline structure, or may be amorphous...
s adorned by complicated paint
Paint
Paint is any liquid, liquefiable, or mastic composition which after application to a substrate in a thin layer is converted to an opaque solid film. One may also consider the digital mimicry thereof...
ed patterns created perhaps by using comb
Comb
A comb is a toothed device used in hair care for straightening and cleaning hair or other fibres. Combs are among the oldest tools found by archaeologists...
s made from fish bone.
By the 7th millennium BC
7th millennium BC
During the 7th millennium BC, agriculture spreads from Anatolia to the Balkans.World population was essentially stable at around 5 million people, living mostly scattered across the globe in small hunting-gathering tribes...
, exceedingly large and organized settlements
Town
A town is a human settlement larger than a village but smaller than a city. The size a settlement must be in order to be called a "town" varies considerably in different parts of the world, so that, for example, many American "small towns" seem to British people to be no more than villages, while...
were found in the region, relying on deep wells
Water well
A water well is an excavation or structure created in the ground by digging, driving, boring or drilling to access groundwater in underground aquifers. The well water is drawn by an electric submersible pump, a trash pump, a vertical turbine pump, a handpump or a mechanical pump...
for sources of water. Hut
Hut
Hut may refer to:*Hut , a small and crude shelter*Hans Hut , Anabaptist leader*Hut Records, an English audio records company*Sunglass Hut International, largest American retailer of sunglasses...
s were constructed in straight row
Row
Row may refer to:*Row vector, a 1 × n matrix in linear algebra.*Row , a single, implicitly structured data item in a table*Row , a form of weight-lifting exercise*Row , an album by Gerard...
s. Sustenance included fruit
Fruit
In broad terms, a fruit is a structure of a plant that contains its seeds.The term has different meanings dependent on context. In non-technical usage, such as food preparation, fruit normally means the fleshy seed-associated structures of certain plants that are sweet and edible in the raw state,...
, legumes, millet
Millet
The millets are a group of small-seeded species of cereal crops or grains, widely grown around the world for food and fodder. They do not form a taxonomic group, but rather a functional or agronomic one. Their essential similarities are that they are small-seeded grasses grown in difficult...
s, sorghum
Sorghum
Sorghum is a genus of numerous species of grasses, one of which is raised for grain and many of which are used as fodder plants either cultivated or as part of pasture. The plants are cultivated in warmer climates worldwide. Species are native to tropical and subtropical regions of all continents...
and tuber
Tuber
Tubers are various types of modified plant structures that are enlarged to store nutrients. They are used by plants to survive the winter or dry months and provide energy and nutrients for regrowth during the next growing season and they are a means of asexual reproduction...
s.
Also in the late 7th millennium BC
7th millennium BC
During the 7th millennium BC, agriculture spreads from Anatolia to the Balkans.World population was essentially stable at around 5 million people, living mostly scattered across the globe in small hunting-gathering tribes...
, but a little later than the time referred to above, imported goat
Goat
The domestic goat is a subspecies of goat domesticated from the wild goat of southwest Asia and Eastern Europe. The goat is a member of the Bovidae family and is closely related to the sheep as both are in the goat-antelope subfamily Caprinae. There are over three hundred distinct breeds of...
s and sheep, apparently from Southwest Asia
Southwest Asia
Western Asia, West Asia, Southwest Asia or Southwestern Asia are terms that describe the westernmost portion of Asia. The terms are partly coterminous with the Middle East, which describes a geographical position in relation to Western Europe rather than its location within Asia...
http://www.comp-archaeology.org/WendorfSAA98.html, appear. Many large hearth
Hearth
In common historic and modern usage, a hearth is a brick- or stone-lined fireplace or oven often used for cooking and/or heating. For centuries, the hearth was considered an integral part of a home, often its central or most important feature...
s also appear.
High level of organization
Archaeological discoveries reveal that these prehistoricPrehistory
Prehistory is the span of time before recorded history. Prehistory can refer to the period of human existence before the availability of those written records with which recorded history begins. More broadly, it refers to all the time preceding human existence and the invention of writing...
peoples led livelihoods seemingly at a higher level of organization than their contemporaries who lived closer to the Nile Valley
Nile
The Nile is a major north-flowing river in North Africa, generally regarded as the longest river in the world. It is long. It runs through the ten countries of Sudan, South Sudan, Burundi, Rwanda, Democratic Republic of the Congo, Tanzania, Kenya, Ethiopia, Uganda and Egypt.The Nile has two major...
. The people of Nabta Playa had:
- above-ground and below-ground stoneRock (geology)In geology, rock or stone is a naturally occurring solid aggregate of minerals and/or mineraloids.The Earth's outer solid layer, the lithosphere, is made of rock. In general rocks are of three types, namely, igneous, sedimentary, and metamorphic...
constructionConstructionIn the fields of architecture and civil engineering, construction is a process that consists of the building or assembling of infrastructure. Far from being a single activity, large scale construction is a feat of human multitasking...
, - villageVillageA village is a clustered human settlement or community, larger than a hamlet with the population ranging from a few hundred to a few thousand , Though often located in rural areas, the term urban village is also applied to certain urban neighbourhoods, such as the West Village in Manhattan, New...
s designed in pre-planned arrangements, and - deep wellsWater wellA water well is an excavation or structure created in the ground by digging, driving, boring or drilling to access groundwater in underground aquifers. The well water is drawn by an electric submersible pump, a trash pump, a vertical turbine pump, a handpump or a mechanical pump...
that held water throughout the year.
Findings also indicate that the region was occupied only seasonally, most likely only in the summer
Summer
Summer is the warmest of the four temperate seasons, between spring and autumn. At the summer solstice, the days are longest and the nights are shortest, with day-length decreasing as the season progresses after the solstice...
period, when the local lake filled with water for grazing cattle
Cattle
Cattle are the most common type of large domesticated ungulates. They are a prominent modern member of the subfamily Bovinae, are the most widespread species of the genus Bos, and are most commonly classified collectively as Bos primigenius...
. Analysis of human remains based on osteological
Osteology
Osteology is the scientific study of bones. A subdiscipline of anatomy, anthropology, and archeology, osteology is a detailed study of the structure of bones, skeletal elements, teeth, morphology, function, disease, pathology, the process of ossification , the resistance and hardness of bones , etc...
data suggests a subsaharan origin or related to the Mushabian
Mushabian culture
The Mushabian culture is suggested to have originated along the Nile Valley prior to migrating to the Levant, due to similar industries demonstrated among archaeological sites in both regions but with the Nile valley sites predating those found in the Sinai regions of the Levant.Accordingly...
desert peoples that later migrated to other less dry regions north, Capsian culture
Capsian culture
The Capsian culture was a Mesolithic culture of the Maghreb, which lasted from about 10,000 to 6,000 BCE.It was concentrated mainly in modern Tunisia, and Algeria, with some sites attested in southern Spain to Sicily....
and east, to the Levante and south, towards Ethiopia and the Horn of Africa.
Religious ties to ancient Egypt
By the 6th millennium BC6th millennium BC
During the 6th millennium BC, agriculture spread from the Balkans to Italy and Eastern Europe, and also from Mesopotamia to Egypt. World population was essentially stable at approximately 5 million, though some speculate up to 7 million.-Events:...
, evidence of a prehistoric religion
Religion
Religion is a collection of cultural systems, belief systems, and worldviews that establishes symbols that relate humanity to spirituality and, sometimes, to moral values. Many religions have narratives, symbols, traditions and sacred histories that are intended to give meaning to life or to...
or cult
Cult
The word cult in current popular usage usually refers to a group whose beliefs or practices are considered abnormal or bizarre. The word originally denoted a system of ritual practices...
appears, with a number of sacrifice
Sacrifice
Sacrifice is the offering of food, objects or the lives of animals or people to God or the gods as an act of propitiation or worship.While sacrifice often implies ritual killing, the term offering can be used for bloodless sacrifices of cereal food or artifacts...
d cattle buried in stone
Rock (geology)
In geology, rock or stone is a naturally occurring solid aggregate of minerals and/or mineraloids.The Earth's outer solid layer, the lithosphere, is made of rock. In general rocks are of three types, namely, igneous, sedimentary, and metamorphic...
-roofed chambers lined with clay
Clay
Clay is a general term including many combinations of one or more clay minerals with traces of metal oxides and organic matter. Geologic clay deposits are mostly composed of phyllosilicate minerals containing variable amounts of water trapped in the mineral structure.- Formation :Clay minerals...
. It has been suggested that the associated cattle
Cattle
Cattle are the most common type of large domesticated ungulates. They are a prominent modern member of the subfamily Bovinae, are the most widespread species of the genus Bos, and are most commonly classified collectively as Bos primigenius...
cult
Cult
The word cult in current popular usage usually refers to a group whose beliefs or practices are considered abnormal or bizarre. The word originally denoted a system of ritual practices...
indicated in Nabta Playa marks an early evolution of Ancient Egypt
Ancient Egypt
Ancient Egypt was an ancient civilization of Northeastern Africa, concentrated along the lower reaches of the Nile River in what is now the modern country of Egypt. Egyptian civilization coalesced around 3150 BC with the political unification of Upper and Lower Egypt under the first pharaoh...
's Hathor
Hathor
Hathor , is an Ancient Egyptian goddess who personified the principles of love, beauty, music, motherhood and joy. She was one of the most important and popular deities throughout the history of Ancient Egypt...
cult
Cult
The word cult in current popular usage usually refers to a group whose beliefs or practices are considered abnormal or bizarre. The word originally denoted a system of ritual practices...
. For example, Hathor was worshipped as a nighttime protector in desert regions (see Serabit el-Khadim
Serabit el-Khadim
Serabit el-Khadim is a locality in the south-west Sinai Peninsula where turquoise was mined extensively in antiquity, mainly by the ancient Egyptians...
). To directly quote professors Wendorf and Schild:
- ... there are many aspects of political and ceremonial life in the PredynasticPredynastic EgyptThe Prehistory of Egypt spans the period of earliest human settlement to the beginning of the Early Dynastic Period of Egypt in ca. 3100 BC, starting with King Menes/Narmer....
and Old Kingdom that reflects a strong impact from SaharaSaharaThe Sahara is the world's second largest desert, after Antarctica. At over , it covers most of Northern Africa, making it almost as large as Europe or the United States. The Sahara stretches from the Red Sea, including parts of the Mediterranean coasts, to the outskirts of the Atlantic Ocean...
n cattle pastoralistsPastoralismPastoralism or pastoral farming is the branch of agriculture concerned with the raising of livestock. It is animal husbandry: the care, tending and use of animals such as camels, goats, cattle, yaks, llamas, and sheep. It may have a mobile aspect, moving the herds in search of fresh pasture and...
...
Nevertheless, though the religious practices of the region involving cattle suggest ties to Ancient Egypt
Ancient Egypt
Ancient Egypt was an ancient civilization of Northeastern Africa, concentrated along the lower reaches of the Nile River in what is now the modern country of Egypt. Egyptian civilization coalesced around 3150 BC with the political unification of Upper and Lower Egypt under the first pharaoh...
, Egyptologist Mark Lehner
Mark Lehner
Mark Lehner PhD is an American archaeologist with more than 30 years of experience excavating in Egypt. His approach, as director of Ancient Egypt Research Associates , is to conduct interdisciplinary archaeological investigation. Every excavated object is examined by specialists to create an...
cautions:
- It makes sense, but not in a facile, direct way. You can't go straight from these megaliths to the pyramid of DjoserDjoserNetjerikhet or Djoser is the best-known pharaoh of the Third dynasty of Egypt. He commissioned his official, Imhotep, to build the first of the pyramids, a step pyramid for him at Saqqara...
.
Other subterranean complexes are also found in Nabta Playa, one of which included evidence of perhaps an early Egyptian attempt at sculpture
Sculpture
Sculpture is three-dimensional artwork created by shaping or combining hard materials—typically stone such as marble—or metal, glass, or wood. Softer materials can also be used, such as clay, textiles, plastics, polymers and softer metals...
.
One of the world's earliest known examples of archeoastronomy
By the 5th millennium BC5th millennium BC
The 5th millennium BC saw the spread of agriculture from the Near East throughout southern and central Europe.Urban cultures in Mesopotamia and Anatolia flourished, developing the wheel. Copper ornaments became more common, marking the Chalcolithic. Animal husbandry spread throughout Eurasia,...
these peoples had fashioned one of the world's earliest known archeoastronomical devices (roughly contemporary to the Goseck circle
Goseck circle
The Goseck circle is a Neolithic structure in Goseck in the Burgenlandkreis district in Saxony-Anhalt, Germany. It consists of a set of concentric ditches 75 metres across and two palisade rings containing gates in defined places. It is considered the earliest sun observatory currently known in...
in Germany and the Mnajdra
Mnajdra
Mnajdra is a megalithic temple complex found on the southern coast of the Mediterranean island of Malta. Mnajdra is approximately 500 metres from the Ħaġar Qim megalithic complex...
megalithic temple complex in Malta). Research suggests that it may have been a prehistoric "calendar
Calendar
A calendar is a system of organizing days for social, religious, commercial, or administrative purposes. This is done by giving names to periods of time, typically days, weeks, months, and years. The name given to each day is known as a date. Periods in a calendar are usually, though not...
" marking the summer
Summer
Summer is the warmest of the four temperate seasons, between spring and autumn. At the summer solstice, the days are longest and the nights are shortest, with day-length decreasing as the season progresses after the solstice...
solstice
Solstice
A solstice is an astronomical event that happens twice each year when the Sun's apparent position in the sky, as viewed from Earth, reaches its northernmost or southernmost extremes...
.
Claims for early alignments and star maps
Astrophysicist Thomas G. Brophy suggests the hypothesis that the southerly line of three stones inside the calendar circle represented the three stars of Orion’s Belt and the other three stones inside the calendar circle represented the shoulders and head stars of OrionOrion (constellation)
Orion, often referred to as The Hunter, is a prominent constellation located on the celestial equator and visible throughout the world. It is one of the most conspicuous, and most recognizable constellations in the night sky...
as they appeared in the sky. These correspondences were for two dates—circa 4,800 BC and at precessional opposition—representing how the sky "moves" long term. Brophy proposes that the circle was constructed and used circa the later date, and the dual date representation was a conceptual representation of the motion of the sky over a precession cycle.
Near the calendar circle, which is made of smaller stones, there are alignments of large megalithic stones. The southerly lines of these megaliths, Brophy shows, aligned to the same stars as represented in the calendar circle, all at the same epoch, circa 6270 BC. The calendar circle correlation with Orion's belt occurred between 6400 BC and 4900 BC, matching the radio-carbon dating of campfires around the circle.
About these, he wrote “The companion megaliths in each distance alignment match corresponding megaliths in each velocity alignment in such a way as to fit the physics of orbital motion, and thus probably represent actual companion objects to the six primary stars. Meaning: The designers of the megaliths had a basic understanding of physics, and knowledge of astronomy that rivaled or surpassed ours today.”.
Recent research
A 2007 article by a team of University archaeoastronomers and archaeologists (three members had been involved in the original discovery of the site and its astronomical alignment) has responded to the work of Brophy and Rosen, in particular their claims for an alignment with SiriusSirius
Sirius is the brightest star in the night sky. With a visual apparent magnitude of −1.46, it is almost twice as bright as Canopus, the next brightest star. The name "Sirius" is derived from the Ancient Greek: Seirios . The star has the Bayer designation Alpha Canis Majoris...
in 6088 and other alignments which they dated to 6270, saying that these dates were about 1500 years earlier than the estimated dates. The Sirius alignment in question was originally proposed by Wendorf and Malville, for one of the most prominent alignments of megaliths labelled the "C-line", which they said aligned to the rising of Sirius circa 4820 BC. Brophy and Rosen showed in 2005 that megalith orientations and star positions reported by Wendorf and Malville were in error, noting that "Given these corrected data, we see that Sirius actually aligned with the C line circa 6000 BC. We estimate that 6088 BC Sirius had a declination of -36.51 deg, for a rising azimuth exactly on the C-line average". Malville acknowledged the corrections made by Brophy and Rosen, but concluded the C-line of megaliths "may not represent an original set of aligned stele; we refrain from interpreting that alignment."
They also criticised suggestions made by Brophy in his book The Origin Map that there was a representation of the Milky Way
Milky Way
The Milky Way is the galaxy that contains the Solar System. This name derives from its appearance as a dim un-resolved "milky" glowing band arching across the night sky...
as it was in 17,500 BC and maps of Orion at 16500 BC, saying "These extremely early dates as well as the proposition that the nomads had contact with extra galactic aliens are inconsistent with the archaeological record. Inference in archaeoastronomy must always be guided and informed by archaeology, especially when substantial field work has been performed in the region.
They propose that the area was first used as what they call a 'regional ceremonial centre' around 6100 to 5600 BC with people coming from various locations to gather on ta dune on the playa where there is archaeological evidence for gatherings which involved large numbers of cattle bones, as cattle were normally only killed on important occasions. Around 5500 BC a new, more organised group began to use the site, burying cattle in clay-lined chambers and building other tumuli. Around 4800 BC a cromlech or stone circle was constructed, with narrow slabs approximately aligned with the summer solstice, near the beginning of the rainy season.
More complex structures followed during a megalith period the researchers dated to between about 4500 BC to 3600 BC. Using their original measurements and measurements by satellite and GPRS measurements by Brophy and Rosen they confirmed possible alignments with Sirius, Arcturus, Alpha Centauri
Alpha Centauri
Alpha Centauri is the brightest star in the southern constellation of Centaurus...
and the Belt of Orion. They suggest that there are three pieces of evidence suggesting astronomical observations by the herdsmen using the site, which may have functioned as a necropolis
Necropolis
A necropolis is a large cemetery or burial ground, usually including structural tombs. The word comes from the Greek νεκρόπολις - nekropolis, literally meaning "city of the dead"...
. "The repetitive orientation of megaliths, stele, human burials and cattle burials reveals a very early symbolic connection to the north." Secondly, there is the orientation of the cromlech mentioned above. The third piece of evidence is the fifth millennium alignments of stele to bright stars.
They conclude their report by writing that "The symbolism embedded in the archaeological record of Nabta Playa in the Fifth Millennium BC is very basic, focussed on issues of major practical importance to the nomads: cattle, water, death, earth, sun and stars."