The 'low' high country where the granite Sierra Nevada Mountains end and the volcanic Cascades begin. Also, a meeting place between the ecologies of the high cold sage desert and the mountains.
A small volcano: One of around a dozen edifices both dormant and dead within the vicinity of Mt. Lassen, the southernmost of the Cascade volcanoes.
Approaching Mt. Shasta from the south on lonely state route 89
Roadside volcano is open and serving. OK, probably not. Cinder cones like this one tend to be one-shot affairs.
Mt. Shasta and its three main peaks from the west.