The Virunga Mountains (also known as Mufumbiro[1]) are a chain of volcanoes in East Africa, in the area where Rwanda, the Democratic Republic of the Congo (DRC), and Uganda meet.

The name "Virunga" is an English version of the Kinyarwanda word ibirunga, which means "volcanoes".

The oldest mountain is Mount Sabyinyo, which rises 3,634 metres (11,923 ft) above sea level.

The Virunga Mountains are home of the endangered mountain gorilla, listed on the IUCN Red List of Endangered Species due to habitat loss, poaching, disease, and war (Butynski et al. 2003).

The Karisoke Research Center, founded by Dian Fossey to observe gorillas in their native habitat, is located between Mount Karisimbi and Mount Bisoke.