Warner Mountains + Modoc Plateau, California
Lava Beds National Monument
Hanakao'o Park to Aston Ka'anapali Shores Resort
Lassen Volcanic National Park
Mount Shasta + Medicine Lake Area, California
Humboldt, California
Humboldt Lagoons State Park
Redwoods + Del Norte Coast, California
Lassen Volcanic National Park
Shasta/Trinity National Forest
Mount Lassen Volcanic Area, California
San Francisco Peninsula + Santa Cruz, California