There are several places to go gorilla trekking in Africa
The Parc National des Volcans (PNV) is part of the Virunga Conservation Area and covers more than 125 kmsq. PNV is home of five Virunga volcanoes: Sabyinyo (3.674 m), Gahinga (3.474 m), Bisoke (3711 m), Muhabura (4.127 m), and the Karisimbi, the highest volcano with an altitude of 4.507 m.
All five volcanoes are extinct, the active ones are located in Congo. Two of them erupted recently; the Nyiragongo erupted in January 2002 and Nyamulagira in July 2002.
The Virunga ecosystem is composed of 4 major vegetation zones: bamboo (base altitude), Hagenia and Hypericum forest (2600-3300m), Sub-alpine (3300-4000m), and Afro-alpine (4000m+).