Dutsen Nyiragongo wani salo ne mai ɗauke da tsawa wanda ya kai tsawan 3,470 m (11,385 ft) a tsaunukan Virunga da ke hade da Rift Albertine yana cikin Filin shakatawa na Virunga, a Jamhuriyar Demokradiyyar Kongo, kimanin kilomita 12 (mil 7.5) arewa da garin Goma da Tafkin Kivu da yamma da iyaka da Rwanda. Babbar kogin tana da nisan kilomita biyu (mil 1) kuma yawanci tana ƙunshe da tabkin ruwa. A yanzu haka ramin yana da kujeru biyu masu sanyin ruwa masu kyau a bango - ɗayan yana da kusan mita 3,175 (ƙafa 10,417) kuma ƙarami a kusan 2,975 m (9,760 ft). Kogin Nyiragongo a wasu lokuta ya kasance mafi shahararren sanannen lava a cikin tarihin kwanan nan. Zurfin tafkin ruwan ya banbanta sosai. An rubuta mafi tsayi na tafkin ruwa a kusan m 3,250 m (10,660 ft) kafin fashewar Janairu 1977 - zurfin tafki na kusan 600 m (2,000 ft). Bayan fashewar Janairu na 2002, an rubuta tafkin lava a ƙasa da kusan 2,600 m (8,500 ft), ko 900 m (3,000 ft) ƙasa da baki.