Lava flows are masses of magma that pour onto the ... The restless lava lake in Nyiragongo's summit crater regularly causes eruptions of gas and smoke laden with tephra. Lava is the word for ...

Streams of lava flowed from Kilauea's crater as one of the world's most active volcanoes began erupting Wednesday. The activity was confined to the closed area of Hawaii Volcanoes National Park on ...