The Simien Mountains
The Simien Mountains, in northern Ethiopia, north east of Gondar, are part of the Ethiopian Highlands. They are a World Heritage Site and include the Simien Mountains National Park. The mountains consist of plateaus separated by valleys and rising to pinnacles. The tallest peak is Ras Dashen (4,550 m); other notable heights include Mounts Biuat (4,437 m) and Kidis Yared (4,453 m).
Because of their geological origins, the mountains are almost unique, with only South Africa’s Drakensberg having been formed in the same manner and thus appearing similar. Notable animals in the mountains include the walia ibex, gelada, and caracal. There are a few Ethiopian wolves.
The Simien Mountains were formed prior to the creation of the Rift Valley, from lava outpourings between 40 and 25 million years ago during the Oligocene period. The volcano is believed to have spread over more than 5000 m2 and resulted in a thick sequence of basaltic lava some 3,000-3,500 m thick that was deposited on Precambrian crystalline basement. The major part of the Simien Mountains consists of remnants of a Hawaiian-type shield volcano. The Kidus Yared peak is situated near the center of the shield volcano. Ras Dejen (4,533 m), Bwahit (4,430 m) and Silki (4,420 m) were formed from the outer core of this ancient volcano.
The extreme escarpment in Simien appears to be a precondition for the formation of the extended uplift of the whole mountain massif 75 million years ago. The dramatic views are due to this volcanic activity. Especially of note is the 2,000 m high escarpment extending in a southwest-northeast direction.
There are different types of soils as a result of the difference in geological formation, glaciations, topography, and climate. The Simien Mountains are highly eroded as a result of human land use practices and as a result of the topography of the area.