This area in the northeast corner of California is volcanic in origin, and is known for Mount Shasta and Lassen Peak. Mount Shasta is currently inactive, but Lassen erupted between 1914 and 1921.
The region includes the counties of Lassen, Modoc, Shasta, and Siskiyou.
For sites of wider interest, see the Northern California: Maps and Views category.
For sites of more local interest, see the individual Counties or Localities categories.
Please submit your site to the most specific level at which it fits.