Arenal Volcano, Costa Rica's best-known stratovolcano, stands more than 5,000 feet high and appears to touch the clouds. For the latter half of the 20th century, admirers traveled to its base in ...

A volcano near Alaska’s most populous city could be on the brink of eruption after showing signs of unrest over the past 10 months, according to experts. Hundreds of small earthquakes have ...

That eruption emanated from the volcano's Crater Peak side vent — an opening located on the side of the volcano — and produced a column of ash that rose 65,000 feet above sea level.

HONOLULU (AP) — Lava from a Hawaii volcano shot into the sky Tuesday in tall fountains that were expected to grow even bigger as part of an off-and-on eruption. The eruption began Dec. 23 in a ...