Imbabura is an inactive stratovolcano

Stratovolcano

A stratovolcano, also known as a composite volcano, is a tall, conical volcano built up by many layers of hardened lava, tephra, pumice, and volcanic ash. Unlike shield volcanoes, stratovolcanoes are characterized by a steep profile and periodic, explosive eruptions...

 in northern Ecuador

Ecuador

Ecuador , officially the Republic of Ecuador is a representative democratic republic in South America, bordered by Colombia on the north, Peru on the east and south, and by the Pacific Ocean to the west. It is one of only two countries in South America, along with Chile, that do not have a border...

. Although it has not erupted for at least 14,000 years, it is not thought to be entirely extinct. Imbabura is intermittently capped with snow and has no permanent glaciers.

Covered in volcanic ash

Volcanic ash

Volcanic ash consists of small tephra, which are bits of pulverized rock and glass created by volcanic eruptions, less than in diameter. There are three mechanisms of volcanic ash formation: gas release under decompression causing magmatic eruptions; thermal contraction from chilling on contact...

, the slopes of Imbabura are especially fertile. In addition to cloud forest

Cloud forest

A cloud forest, also called a fog forest, is a generally tropical or subtropical evergreen montane moist forest characterized by a persistent, frequent or seasonal low-level cloud cover, usually at the canopy level. Cloud forests often exhibit an abundance of mosses covering the ground and...

s, which are found across the northern Andes

Andes

The Andes is the world's longest continental mountain range. It is a continual range of highlands along the western coast of South America. This range is about long, about to wide , and of an average height of about .Along its length, the Andes is split into several ranges, which are separated...

 to an altitude of 3000 m, the land around Imbabura is extensively farmed

Agriculture

Agriculture is the cultivation of animals, plants, fungi and other life forms for food, fiber, and other products used to sustain life. Agriculture was the key implement in the rise of sedentary human civilization, whereby farming of domesticated species created food surpluses that nurtured the...

. Maize

Maize

Maize known in many English-speaking countries as corn or mielie/mealie, is a grain domesticated by indigenous peoples in Mesoamerica in prehistoric times. The leafy stalk produces ears which contain seeds called kernels. Though technically a grain, maize kernels are used in cooking as a vegetable...

, sugarcane

Sugarcane

Sugarcane refers to any of six to 37 species of tall perennial grasses of the genus Saccharum . Native to the warm temperate to tropical regions of South Asia, they have stout, jointed, fibrous stalks that are rich in sugar, and measure two to six metres tall...

, and bean

Bean

Bean is a common name for large plant seeds of several genera of the family Fabaceae used for human food or animal feed....

s are all staple crops of the region. 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...

 are also an important commodity, and much of the land on and around Imbabura, especially the high-altitude meadows above the tree line, is used for grazing

Grazing

Grazing generally describes a type of feeding, in which a herbivore feeds on plants , and also on other multicellular autotrophs...

.

Geography and geology

Imbabura is a volcano in the southern Ring of Fire. As the Coolyo Plate is subducted

Subduction

In geology, subduction is the process that takes place at convergent boundaries by which one tectonic plate moves under another tectonic plate, sinking into the Earth's mantle, as the plates converge. These 3D regions of mantle downwellings are known as "Subduction Zones"...

 beneath the South American Plate

South American Plate

The South American Plate is a continental tectonic plate which includes the continent of South America and also a sizeable region of the Atlantic Ocean seabed extending eastward to the Mid-Atlantic Ridge....

, the former melts with exposure to the hotter asthenosphere

Asthenosphere

The asthenosphere is the highly viscous, mechanically weak and ductilely-deforming region of the upper mantle of the Earth...

. This melted rock, which is less dense

Density

The mass density or density of a material is defined as its mass per unit volume. The symbol most often used for density is ρ . In some cases , density is also defined as its weight per unit volume; although, this quantity is more properly called specific weight...

 than the crust

Crust (geology)

In geology, the crust is the outermost solid shell of a rocky planet or natural satellite, which is chemically distinct from the underlying mantle...

 above it, rises to the surface. The result is an arc of volcanoes

Volcanic arc

A volcanic arc is a chain of volcanoes positioned in an arc shape as seen from above. Offshore volcanoes form islands, resulting in a volcanic island arc. Generally they result from the subduction of an oceanic tectonic plate under another tectonic plate, and often parallel an oceanic trench...

, which includes Imbabura, 100–300 km away from the subduction zone.

Imbabura is the product of Strombolian Eruption

Strombolian eruption

Strombolian eruptions are relatively low-level volcanic eruptions, named after the Italian volcano Stromboli, where such eruptions consist of ejection of incandescent cinder, lapilli and lava bombs to altitudes of tens to hundreds of meters...

s, which, in comparison to Plinian Eruption

Plinian eruption

Plinian eruptions, also known as 'Vesuvian eruptions', are volcanic eruptions marked by their similarity to the eruption of Mount Vesuvius in AD 79 ....

s, are relatively low-intensity and low volume. They are generally characterized by the ejection of cinder

Cinder

A cinder is a pyroclastic material. Cinders are extrusive igneous rocks. Cinders are similar to pumice, which has so many cavities and is such low-density that it can float on water...

s, lapilli

Lapilli

Lapilli is a size classification term for tephra, which is material that falls out of the air during a volcanic eruption or during some meteorite impacts. Lapilli means "little stones" in Latin. They are in some senses similar to ooids or pisoids in calcareous sediments.By definition lapilli range...

, and lava bombs, as well as the accumulation of dark tephra

Tephra

200px|thumb|right|Tephra horizons in south-central [[Iceland]]. The thick and light coloured layer at center of the photo is [[rhyolitic]] tephra from [[Hekla]]....

 around the volcanic vent. This forms a cinder cone

Volcanic cone

Volcanic cones are among the simplest volcanic formations. They are built by ejecta from a volcanic vent, piling up around the vent in the shape of a cone with a central crater. Volcanic cones are of different types, depending upon the nature and size of the fragments ejected during the eruption...

. Imbabura’s cone is relatively exposed from erosion

Erosion

Erosion is when materials are removed from the surface and changed into something else. It only works by hydraulic actions and transport of solids in the natural environment, and leads to the deposition of these materials elsewhere...

 and easy to identify.

In fact, the mountain is a complex of cinder cones with varying heights. Many of them are named, including el Cubilche, Azaya (or Huarmi Imbabura), Pangaladera, Cunrru, Artezón, Zapallo Loma, Angaraloma, and Araque.

Imbabura was active during the late Pleistocene

Late Pleistocene

The Late Pleistocene is a stage of the Pleistocene Epoch. The beginning of the stage is defined by the base of the Eemian interglacial phase before the final glacial episode of the Pleistocene 126,000 ± 5,000 years ago. The end of the stage is defined exactly at 10,000 Carbon-14 years BP...

 and early Holocene

Holocene

The Holocene is a geological epoch which began at the end of the Pleistocene and continues to the present. The Holocene is part of the Quaternary period. Its name comes from the Greek words and , meaning "entirely recent"...

 epochs, for the last time approximately 14,000 years ago. Future pyroclastic flow

Pyroclastic flow

A pyroclastic flow is a fast-moving current of superheated gas and rock , which reaches speeds moving away from a volcano of up to 700 km/h . The flows normally hug the ground and travel downhill, or spread laterally under gravity...

s from any of Imbabura’s cones could pose a serious threat, however. From the Azaya cone, which faces West, pyroclastic flows could hit the San Pablo lake at the base of the mountain and generate devastating waves; from the Artesón cone, which faces north, pyroclastic flows could strike the city of Ibarra

Ibarra, Ecuador

Ibarra is a city in northern Ecuador and the capital of the Imbabura Province. It lies at the foot of the Imbabura Volcano and on the left bank of the Tahuando river. It is about northeast of Ecuador's capital Quito....

, with a population of nearly 300,000. For this reason, Imbabura remains closely monitored by volcanologists

Volcanology

Volcanology is the study of volcanoes, lava, magma, and related geological, geophysical and geochemical phenomena. The term volcanology is derived from the Latin word vulcan. Vulcan was the ancient Roman god of fire....

.

Cultural importance

As the dominant geographic feature of the area, Imbabura is of significant importance to the local culture, which involves a spiritual relationship with the land. The mountain is sometimes personified locally as Taita Imbabura, or "Papa" Imbabura. In fact, Imbabura is considered the sacred protector of the region.

One of boulders ejected by Imbabura's last eruption, which landed nearby in Peguche, was revered as Achilly Pachacamac, the supreme god, by pre-Incan peoples. According to local legend

Folklore

Folklore consists of legends, music, oral history, proverbs, jokes, popular beliefs, fairy tales and customs that are the traditions of a culture, subculture, or group. It is also the set of practices through which those expressive genres are shared. The study of folklore is sometimes called...

, Mojanda and Imbabura each hurled stones across the valley; but Imbabura, who is often characterized as a womanizer, was weakened by his amorous affairs, and his rock fell short. The stone has been carved into the shape of a face.

It is said that Imbabura fought with Mojanda

Mojanda

Mojanda is an inactive stratovolcano of the Eastern Cordillera of the Andes in northern Ecuador. A summit caldera, which was produced by an explosive Plinian Eruption that marked the end of Mojanda activity 200,000 years ago, is presently occupied by three crater lakes: Caricocha , Yanacocha,...

 to win the love of Cotacachi

Cotacachi Volcano

Cotacachi is a dormant volcano in the Western Cordillera of the northern Ecuadorian Andes, in the west of Imbabura Province....

, who became his wife. When Cotacachi is snowcapped in the morning, it is said that Imbabura has been with her during the night. Building upon these legends, some of the smaller peaks nearby, especially Yanahurca (or Wawa Imbabura) north of Cotacachi, are called the offspring of the two.

When it rains in Otavalo and surrounding areas, it is also said that Imbabura is "peeing" in the valley.

On a western slope, an area of loose earth perfectly resembles a heart. This area, known as the "heart of the mountain" is much beloved by residents and appears in local art depicting the volcano. The area is said to be enchanted, as no human nor animal has been capable of scaling or hiking across the area.