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Global Volcanism Program | Image GVP-03018

The blocky Jefferson Creek lava flow in the foreground, which traveled 13 km down Jefferson and Candle Creeks from a unnamed cinder cone NE of Forked Butte, is younger than the nearby 6500-year-old Forked Butte lava flow.  The two flows traveled down different drainages to join near this point.  The snow-covered tip of Mount Jefferson is visible above the trees just left of center. Photo by Lee Siebert, 1995 (Smithsonian Institution).

The blocky Jefferson Creek lava flow in the foreground, which traveled 13 km down Jefferson and Candle Creeks from a unnamed cinder cone NE of Forked Butte, is younger than the nearby 6500-year-old Forked Butte lava flow. The two flows traveled down different drainages to join near this point. The snow-covered tip of Mount Jefferson is visible above the trees just left of center.

Photo by Lee Siebert, 1995 (Smithsonian Institution).


Jefferson