Black Butte, California, USA
U.S.Geological Survey photo by R. Christiansen, 1975
On the flank of Mount Shasta is a lesser volcano named Shastina, which erupted after most of Shasta was built. On the flank of Shastina, down at its western base, is an even smaller volcano, Black Butte. It is noteworthy because it sits right next to Interstate 5 near the town of Mount Shasta. It last erupted at the beginning of Holocene time, less than 10,000 years ago. It should be considered dormant, not extinct.
