VANCOUVER, Washington (CNN) -- A new lava dome inside Mount St. Helens' crater has sprouted a growth that extends upward nearly 330 feet, U.S. Geological Survey officials said Saturday.

The eruption of Mount St. Helens was catastrophic and caused the wipeout of various species, demanding a revival of the lost ...

W hen Mount St Helens erupted in 1980, the resulting lava, ash, and debris turned the landscape barren for miles around. It ...

Left: An aerial view of the 600-foot lava dome in the crater of Washington's Mt. St. Helens, as seen between the May and July eruptions in 1980.

An curved arrow pointing right. Scientists are baffled as to where Mount St. Helens gets its lava from. Though the volcano is part of a cluster of volcanoes known as the North American Cascade Arc ...

This false-color satellite photo from 2014 shows the immense heat emanating from lava lakes at the summits of a pair of ...

the colossal eruption of Mt. St. Helens in 1980 blasted away an entire mountainside. Over 200 square miles of pristine forest were buried under millions of tons of lava, ash, mud, and avalanche ...

A very common case study for volcanoes is the eruption of Mount St Helens in the USA in 1980. Other case studies include the eruption of Mount Etna in Sicily in 1974 and Heimaey eruption in ...