volcano

Some fifty million years ago magma pushed up the ground in the Black Hills. It's the closest South Dakota has to a volcano.

Chile's Calbuco erupted on Wednesday for the first time in 40 years on Wednesday, causing some 4,000 people in a 12-mile radius to be evacuated.

A terrifying scene unfolded Sunday when Japan's Mount Ontake erupted -- while climbers were in the midst of scaling the 10-000-foot-high volcano.