Mount Nyiragongo is a volcano located in Virunga National Park in the Democratic Republic of the Congo. Mount Nyiragongo has a molten lake of lava in the crater of its summit, obscured here by steam. Nyiragongo’s lava is unusually runny, flowing downslope at speeds up to 100 km/h (62 mph). The volcano has twice sent lava streams down into nearby villages and into the city of Goma.