The ongoing activity at Mayon Volcano, such as lava fountains and sustained flows, has been classified by state volcanologists as an effusive eruption. But what does that mean? According to the ...

Every day, blocks of cooling rock tumble from the edges of a growing lava dome near the top of Great Sitkin Volcano, a 5,710-foot stratovolcano rising from the central Aleutian Islands roughly 26 ...