A rare 'ghost island' appeared and quickly disappeared in the Caspian Sea after the eruption of Kumani Bank mud volcano off ...

Mount Everest is indeed the world's highest mountain, with its peak standing at 8,849m (that's 8.8km) above the ocean.

An extinct volcano is lying hidden in Carlsbad's Calavera Nature Preserve in north San Diego County. Welcome to Mount Calavera!

This volcano is the highlight of a chain of underwater mountains known as the Juan de Fuca Ridge (center of above image).

suggests that the composition of magma could drive tremors during volcanic eruptions. The findings, which are detailed today in the journal Nature Geoscience in a paper led by scientists at the ...

"Did you know that this is actually a volcano?" NBC San Diego meteorologist Francella Perez asked Channin Franz, a hiker at Carlsbad's Calavera Nature Preserve. Get top local stories in DFW ...