Four years after the powerful 18 May 1980 eruption of Mount St. Helens, a lava dome partially fills the crater. The dome, seen here from the north on 16 May 1984, grew during episodic periods of rapid growth that lasted from 1980 until 1986. By the end of the eruption the dome filled much of the crater floor, reaching a width of 1,100 m and a height of 250 m.

Photo by Lyn Topinka, 1984 (U.S. Geological Survey).

This image is made available as a Public Domain Work, but proper attribution is appreciated.

Galleries: Lava Domes | Craters

Keywords: lava dome | collapse scarp | crater | plume | degassing

St. Helens