Global Volcanism Program | Image GVP-02972

Trillium Lake provides a dramatic view of the broad debris fan on the S flank of Mount Hood that originated from growth of the Crater Rock lava dome, visible on the upper SW flank just below the summit. Dome growth and collapse produced block-and-ash flows and resulted in lahars down the Sandy River and White River drainages. Photo by Dave Wieprecht, 1993 (U.S. Geological Survey).

Trillium Lake provides a dramatic view of the broad debris fan on the S flank of Mount Hood that originated from growth of the Crater Rock lava dome, visible on the upper SW flank just below the summit. Dome growth and collapse produced block-and-ash flows and resulted in lahars down the Sandy River and White River drainages.

Photo by Dave Wieprecht, 1993 (U.S. Geological Survey).

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Keywords: lava dome | stratovolcano

Hood