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 ...

(CNN) — Here's some background information about volcanoes, mountains that open downward to a reservoir of molten rock. Facts: More than 80% of the Earth's surface, both above and below sea level, is ...

Near-constant activity continues on the volcano in Russia. Shivelyuch (also called Shiveluch), the most northerly active volcano on the Kamchatka Peninsula, is one of the most active volcanoes in the ...

Episode 20 of lava fountaining at Kilauea volcano’s summit ended late Tuesday night after 4.5 hours, Hawaiian Volcano Observatory scientists said The Halemaumau eruption is now paused after the ...

Nearly five years after it rumbled back to life, Great Sitkin volcano is still pushing lava into its summit crater, one stubborn, slow-motion pulse at a time. The Alaska Volcano Observatory confirmed ...

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 ...