Burney Mountain, California, USA
(c) 2005 Andrew Alden, licensed to About.com (fair use policy)
Burney Mountain is a midsized stratovolcano of the southern Cascade Range between Mount Shasta and Mount Lassen, considered to be of Pleistocene age. That means Burney Mountain is not conventionally considered active, but the volcano still has a symmetrical, youthful form and it would not be surprising if activity began in the next thousand years.
More photos from the Cascade Range
