Brown Mountain is a small cinder cone on top of a shield volcano located in Cascade Volcanic Arc in Klamath and Jackson counties, Oregon. Most of the mountain, including its peak, is in western Klamath County, but its western flanks trail off into eastern Jackson County. It is above sea level, but is overshadowed by nearby 9495ft Mount McLoughlin.GeologyBrown Mountain appears to be relatively young at first as its summit is unweathered and devoid of trees, however glacial valleys and a cirque near the summit prove that the mountain is actually twelve thousand to sixty thousand years old. Around two thousand years ago, a large lava flow consisting primarily of basaltic andesite covered of the north and western slopes with Aa-type lava over thick. Over its lifetime, the mountain has erupted over of lava.Access and trailsBrown Mountain can be accessed via Oregon Route 140, which passes just north of the peak. It can also be accessed through the Pacific Crest Trail, and the 6.8mi Brown Mountain Trail.Flora and faunaThe area at the base of the mountain is covered with old growth forests. The mountain is also home to animals such as Douglas squirrels and pikas. Toward the summit, the land is nearly devoid of vegetation.
