Here’s a look at volcanoes, mountains that open downward to a reservoir of molten rock. More than 80% of the Earth’s surface, both above and below sea level, is of volcanic origin. Lava is molten rock ...

400-mile-long chain of fossilized volcanoes discovered beneath China Researchers recently discovered a huge chain of extinct volcanoes buried deep below South China that formed when two tectonic ...

Lava is molten rock from a volcano that reaches the Earth’s surface. Liquid rock below the Earth’s surface is referred to as magma. More than 50% of the world’s active volcanoes above sea level ...

Scientists find giant magma reservoirs hidden beneath dormant volcanoes in the Cascades The magma system beneath volcanoes may persist even after recent eruptions, a new study finds. Italy's 'ticking ...