Golden monkey in the context of "Virunga National Park"

Mount Gahinga is a dormant/extinct volcano in the Virunga Mountains on the Rwanda-Uganda border. Gahinga lies between Muhabura and Sabyinyo, but is the smallest of these three volcanoes. 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 180 m (591 ft) wide. It is part of Mgahinga Gorilla National Park, a protected area that is home to different kinds of wildlife. Mgahinga Gorilla National Park got its name from this volcano. Mount Gahinga, whose elevation is 3,473 m (11,394 ft), is part of a chain of eight volcanic mountains of the Virunga Mountains. The volcano chain spans 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 on Mount Gahinga are a habitat of the endangered mountain gorilla. There are several other species of animals and birds that form part of the Mount Gahinga ecosystem. The golden monkeys are notable to these.

Volcanoes National Park is a national park in northwestern Rwanda. It covers 160 km (62 sq mi) of rainforest and encompasses five of the eight volcanoes in the Virunga Mountains, namely Karisimbi, Bisoke, Muhabura, Gahinga and Sabyinyo. It borders Virunga National Park in the Democratic Republic of the Congo and Mgahinga Gorilla National Park in Uganda. It is home to the mountain gorilla and the golden monkey, and was the base for the primatologist Dian Fossey.

The blue monkey or diademed monkey (Cercopithecus mitis) is a species of Old World monkey native to Central and East Africa, ranging from the upper Congo River basin east to the East African Rift and south to northern Angola and Zambia. It sometimes includes Sykes', silver, and golden monkeys as subspecies.