Mount Gahinga is a dormant extinct volcano in the virunga mountains on the border between Rwanda and Uganda. Gahinga lies between Muhabura and Sabyinyo, but is the smallest of these three. Mount Gahinga, also known in the local kinyarwanda/rufumbira dialect as “a small pile of stones”, has a swampy caldera on its peak. The caldera is believed to be about 180m(591ft) wide. Mgahinga gorilla national park also got its name from this volcano. Mount Gahinga, whose elevation is 3,473m(11,394ft), is part of a chain of eight volcanic mountains of the mufumbiro ranges. The volcano chain downs across Uganda, Rwanda and the Democratic republic of Congo.
The vegetation across the mountain can be described as afro-montane with bamboo composing the main vegetation. Like muhabura and Sabyinyo, the bamboo forests in mount Gahinga are a habitat of the endangered mountain gorillas. There are several other species of animals and birds that form part of the mount Gahinga ecosystem. The golden monkeys are notable to these.