Black Butte, el. is the highest peak in the Gravelly Range in Madison County, Montana. The eastern base of the peak is less than from the Beaverhead-Deerlodge National Forest road #290 (Gravelly Range Road).
Geology Black Butte is a remnant of what was once a volcanic cone.https://www.onthewingphotography.com/wings/2016/07/21/black-butte-of-the-gravelly-range-montana/#:~:text=The%20highest%20peak%20of%20the%20Gravelly%20Range%20is,volcanic%20cone%2C%20at%20an%20elevation%20of%2010%2C542%20feet. Due to its height, it is probably the third-highest volcanic peak in Montana, the second and first-highest being the laccoliths Lone Mountain and Koch Peak.
See also Mountains in Madison County, Montana
Notes