The summit of Lassen Peak contains a lava flow and several craters that formed during the 1914-1917 eruption. Lava flowed out of the crater through low points in the eastern and western crater rims. The NW crater in the foreground (right) formed during explosions near the end of the eruption in 1917.

Photo by Bill Chadwick, 1981 (U.S. Geological Survey).

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

Keywords: lava flow | crater

Lassen Volcanic Center