Guinea Highlands
Encyclopedia
Fouta Djallon
Fouta Djallon is a highland region in the centre of Guinea, West Africa. The indigenous name is Fuuta-Jaloo...
highlands in southeastern Guinea through to northern Sierra Leone
Sierra Leone
Sierra Leone , officially the Republic of Sierra Leone, is a country in West Africa. It is bordered by Guinea to the north and east, Liberia to the southeast, and the Atlantic Ocean to the west and southwest. Sierra Leone covers a total area of and has an estimated population between 5.4 and 6.4...
and Liberia
Liberia
Liberia , officially the Republic of Liberia, is a country in West Africa. It is bordered by Sierra Leone on the west, Guinea on the north and Côte d'Ivoire on the east. Liberia's coastline is composed of mostly mangrove forests while the more sparsely populated inland consists of forests that open...
, and northwestern Côte d'Ivoire
Côte d'Ivoire
The Republic of Côte d'Ivoire or Ivory Coast is a country in West Africa. It has an area of , and borders the countries Liberia, Guinea, Mali, Burkina Faso and Ghana; its southern boundary is along the Gulf of Guinea. The country's population was 15,366,672 in 1998 and was estimated to be...
.
They form the source of the Niger River
Niger River
The Niger River is the principal river of western Africa, extending about . Its drainage basin is in area. Its source is in the Guinea Highlands in southeastern Guinea...
, the longest river in western Africa. In Guinea they are known as Dorsale Guinéenne and historically have been isolated. The highest mountain in the region is Mount Nimba
Mount Nimba
Mount Richard-Molard is a mountain along the border of Côte d'Ivoire and Guinea in West Africa. At 1,752 m it is the highest point in both nations. The mountain is the highest peak of the Nimba Range , straddling the border between the two countries and Liberia...
which is 1752 metres (5,748 ft). They mostly however lie between 300 and 500 m (984.3 and 1,640.4 ft) above sea level. Geologically the composition of the sediments in the highlands though are the same as in Upper Guinea and include granite
Granite
Granite is a common and widely occurring type of intrusive, felsic, igneous rock. Granite usually has a medium- to coarse-grained texture. Occasionally some individual crystals are larger than the groundmass, in which case the texture is known as porphyritic. A granitic rock with a porphyritic...
s, schist
Schist
The schists constitute a group of medium-grade metamorphic rocks, chiefly notable for the preponderance of lamellar minerals such as micas, chlorite, talc, hornblende, graphite, and others. Quartz often occurs in drawn-out grains to such an extent that a particular form called quartz schist is...
s, and quartzite
Quartzite
Quartzite is a hard metamorphic rock which was originally sandstone. Sandstone is converted into quartzite through heating and pressure usually related to tectonic compression within orogenic belts. Pure quartzite is usually white to gray, though quartzites often occur in various shades of pink...
s.
The highland region is also linked to the Jos Plateau
Jos Plateau
The Jos Plateau is a plateau located near the center of Nigeria. It covers 8600 km² and is bounded by 300-600 meter escarpments around much of its circumference. With an average altitude of 1280 metres and its highest point is Shere Hills 1829 meters...
in Nigeria, in the Adamawa Region, Cameroon Highlands of Cameroon
Cameroon
Cameroon, officially the Republic of Cameroon , is a country in west Central Africa. It is bordered by Nigeria to the west; Chad to the northeast; the Central African Republic to the east; and Equatorial Guinea, Gabon, and the Republic of the Congo to the south. Cameroon's coastline lies on the...
and the Mandingue Plateau near Bamako
Bamako
Bamako is the capital of Mali and its largest city with a population of 1.8 million . Currently, it is estimated to be the fastest growing city in Africa and sixth fastest in the world...
in Mali
Mali
Mali , officially the Republic of Mali , is a landlocked country in Western Africa. Mali borders Algeria on the north, Niger on the east, Burkina Faso and the Côte d'Ivoire on the south, Guinea on the south-west, and Senegal and Mauritania on the west. Its size is just over 1,240,000 km² with...
.
Yomou
Yomou
Yomou is a town located in southeastern Guinea. It is the capital of Yomou Prefecture. It has an estimated population of 29,138 growing from 9,661 ....
is the chief market town for the densely forested region of the Guinea Highlands. Main commodities sold in the town include rice
Rice
Rice is the seed of the monocot plants Oryza sativa or Oryza glaberrima . As a cereal grain, it is the most important staple food for a large part of the world's human population, especially in East Asia, Southeast Asia, South Asia, the Middle East, and the West Indies...
, cassava
Cassava
Cassava , also called yuca or manioc, a woody shrub of the Euphorbiaceae native to South America, is extensively cultivated as an annual crop in tropical and subtropical regions for its edible starchy tuberous root, a major source of carbohydrates...
, coffee
Coffee
Coffee is a brewed beverage with a dark,init brooo acidic flavor prepared from the roasted seeds of the coffee plant, colloquially called coffee beans. The beans are found in coffee cherries, which grow on trees cultivated in over 70 countries, primarily in equatorial Latin America, Southeast Asia,...
, palm oil
Palm oil
Palm oil, coconut oil and palm kernel oil are edible plant oils derived from the fruits of palm trees. Palm oil is extracted from the pulp of the fruit of the oil palm Elaeis guineensis; palm kernel oil is derived from the kernel of the oil palm and coconut oil is derived from the kernel of the...
and kernels
Seed
A seed is a small embryonic plant enclosed in a covering called the seed coat, usually with some stored food. It is the product of the ripened ovule of gymnosperm and angiosperm plants which occurs after fertilization and some growth within the mother plant...
. The region is inhabited mainly inhabited by the Guerze (Kpelle) and Mano (Manon
Manon
Manon is an opéra comique in five acts by Jules Massenet to a French libretto by Henri Meilhac and Philippe Gille, based on the 1731 novel L’histoire du chevalier des Grieux et de Manon Lescaut by the Abbé Prévost...
) peoples.