Volcano collapses mark the beginning and end of USGS scientist's career
Detailed Description
Left: Horseshoe-shaped crater of Mount St. Helens in 1980, formed by a landslide that removed the top of the volcano. The crater is about 2 km (1.2 mi) wide and the floor is about 600 m (1,970 ft) below the crater rim. Right: Halema'uma'u nestled in the summit crater of Kīlauea Volcano on August 1, the day before the last collapse event. The Hawaiian Volcano Observatory building is visible at far right. USGS photos.
Sources/Usage
Public Domain.