Big Southern Butte is one of two rhyolitic domes rising from a sea of basalt near the center of the eastern Snake River Plain (of the nearby Twin Buttes, East Butte is rhyolitic and Middle Butte is basaltic). The area supports lodgepole pine, aspen, Douglas fir, and manzanita (not common to this region). The butte is one of the largest volcanic domes in the world but at 300,000 years old is also one of the youngest. Hikers who trek to the 7,550-foot high summit are rewarded with spectacular…
Big Southern Butte is primarily first-come, first-served. Use the availability view to gauge how busy it is before you go.
See the map for Big Southern Butte's exact location and directions.
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