* Afar Triangle: The Afar Triangle is a geological depression in the northern part of the Great Rift Valley. It is located in the countries of Ethiopia, Eritrea, and Djibouti. The Afar Triangle is home to some of the most extreme temperatures on Earth, and it is also home to several active volcanoes.
* Semien Mountains: The Semien Mountains are a mountain range in northern Ethiopia. The highest point in the Semien Mountains is Ras Dashen, which has an elevation of 4,550 meters (14,931 feet). The Semien Mountains are home to a variety of wildlife, including the endangered Ethiopian wolf.
* Bale Mountains: The Bale Mountains are a mountain range in southeastern Ethiopia. The highest point in the Bale Mountains is Tullu Dimtu, which has an elevation of 4,377 meters (14,360 feet). The Bale Mountains are home to a variety of wildlife, including the endangered mountain nyala.
* Virunga Mountains: The Virunga Mountains are a mountain range in the eastern part of the Democratic Republic of the Congo. The highest point in the Virunga Mountains is Mount Nyiragongo, which has an elevation of 3,470 meters (11,385 feet). The Virunga Mountains are home to a variety of wildlife, including the endangered mountain gorilla.