* Savanna: Large portions of the Horn of Africa are covered in savanna grasslands, characterized by scattered trees and a dry season. This is particularly prominent in countries like Ethiopia, Somalia, and Kenya.
* Arid and Semi-Arid Regions: The Horn of Africa includes vast desert and semi-desert areas, with low rainfall and sparse vegetation. The Danakil Depression in Ethiopia is a prime example of a hyperarid region.
* Tropical Montane Forests: In the Ethiopian Highlands, there are pockets of tropical montane forests with higher rainfall and cooler temperatures compared to the lower elevations.
Therefore, the Horn of Africa is a complex mosaic of biomes, with savanna being the most dominant, but also encompassing arid/semi-arid and tropical montane forest regions.