Nyiragongo is a two-mile-high volcano towering ... then it coalesced into a jigsaw puzzle, then a ragged map of the world. The lake roared like a jet plane taking off and emitted a thick white ...

Among the most active and deadly of these volcanoes is Nyiragongo, a so-called stratovolcano located just north of the city of Goma in the Democratic Republic of Congo. In this interactive ...