Four lava domes are visible in this 1979 photo from Timberline parking lot on the N flank of Mount St. Helens. In addition to the glacier-covered summit lava dome, the Dogs Head lava dome is the prominent mound on the left skyline, the Sugar Bowl lava dome is the flat mound below the glaciers to the right, and the 19th-century Goat Rocks dome (removed by the 1980 eruption) is to the far right.

Photo by Lee Siebert, 1979 (Smithsonian Institution).

This image is made available under the Public Domain Dedication CC0 license, but proper attribution is appreciated.

Keywords: stratovolcano | lava dome

St. Helens