- California54 objects
- North America54 objects
- Northeastern California✖Remove constraint Collection place: Northeastern California54 objects
- Northern California54 objects
- The Americas54 objects
- United States54 objects
- Northern Sierras, Northern California32 objects
- Calaveras County, California25 objects
- CA-Cal-83, Calaveras County, California18 objects
- Lassen County, California8 objects
- Siskiyou County, California8 objects
- Lower Klamath Lake Area, Siskiyou County, California7 objects
- Lower Klamath Lake, Siskiyou County, California7 objects
- Amador County, California6 objects
- CA-Ama-3 (Bamert Cave), Amador County, California6 objects
- CA-Las-7, Karlo area, Lassen County6 objects
- CA-Sis-223, Lower Klamath Lake, Siskiyou County6 objects
- Karlo area, Lassen County, California6 objects
- Shasta County, California5 objects
- CA-Cal-114, Calaveras County, California3 objects