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Global Volcanism Program | Image GVP-03055

The young lava flow in the foreground, with snow-capped Mount Jefferson in the background, was erupted about 2600-2900 years ago from Yapoah cinder cone on the north flank of North Sister volcano.  Lava flows in the middle of the photo originated from Little Belknap shield volcano, part of one of the largest concentrations of youthful volcanism in the continental United States: the McKenzie Pass area of the central Oregon Cascade Range. Photo by Lee Siebert, 1995 (Smithsonian Institution).

The young lava flow in the foreground, with snow-capped Mount Jefferson in the background, was erupted about 2600-2900 years ago from Yapoah cinder cone on the north flank of North Sister volcano. Lava flows in the middle of the photo originated from Little Belknap shield volcano, part of one of the largest concentrations of youthful volcanism in the continental United States: the McKenzie Pass area of the central Oregon Cascade Range.

Photo by Lee Siebert, 1995 (Smithsonian Institution).


Jefferson

Belknap