In this photo released by Virunga National Park on Monday, Mount Nyamulagira in eastern Congo is seen erupting on Friday. Virunga National Park in Congo is inviting tourists on an overnight trek to view a spectacular eruption of Mount Nyamulagira, where rivers of incandescent lava are flowing slowly north into an uninhabited part of the park but pose no danger to its critically endangered mountain gorillas. (PTI)
