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Lava and mudflows from Lassen Peak, May 22, 1915

By California Volcano Observatory
In a black-and-white photo, a snow-covered mountain peak is streaked with dark mud flowing down its sides in three directions. One flow directly faces the viewer, showing where trees have been mowed over by the debris. Elsewhere on the slopes, pine trees are scattered through the snow.
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Detailed Description

Benjamin F. Loomis Historical Photograph Collection: Lassen Peak showing new lava flow on summit and large mudflows on slopes. Photo courtesy of NPS.

Sources/Usage

Public Domain.

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