Global Volcanism Program | Image GVP-02705
The pyroclastic flow deposit forming the foreground canyon wall on the Lillooet River was erupted from the Bridge River vent on the NE flank of the Meager volcanic complex. A vent to the upper right, below the notch in the skyline, was the source of an explosive eruption about 2,350 years ago. It produced ash that dispersed east across British Columbia and Alberta, the pyroclastic flow mentioned here, and a 3-km-long rhyodacite lava flow.
Photo by Willie Scott, 1990 (U.S. Geological Survey).
This image is made available as a Public Domain Work, but proper attribution is appreciated.