This striking satellite photo shows the unusual shape of Spirit Lake, which was transformed into a giant anatomically inaccurate heart by the explosive eruption of Mount St. Helens in 1980.

One volcanologist who has spent time studying the volcano said the devastation its eruption would cause would be "complete ...

It starts with the eruption of Mount St. Helens in May of 1980. It was the most destructive volcanic event in American history, claiming 57 lives and causing staggering ecological damage.

Instead, researchers now believe that eruptions only release a small fraction of available magma, while the reservoir remains replenished over thousands of years. For example, Mount St. Helens ...

Mount St Helens towers over the surrounding landscape at 8363ft (2549m) at its highest. The peak is topped with glacial ice. The volcano last had a significant eruption in 1980 ... which left damage ...

Mount Spurr erupted once in 1953 and three times in 1992, according to the observatory. Both years saw eruptions at the Crater Peak vent, located two miles south of the volcano’s summit.

An eruption could impact the most populated city in Alaska. An active volcano near Alaska's most populated city could be on the brink of eruption, according to scientists who are constantly ...