- North America58 objects
- The Americas58 objects
- United States✖Remove constraint Collection place: United States58 objects
- Nevada36 objects
- Churchill County, Nevada34 objects
- Grimes Point Caves, Churchill County, Nevada23 objects
- NV-Ch-16 (Hidden Cave), Churchill County, Nevada23 objects
- San Juan County, Utah20 objects
- Southern Utah20 objects
- Southwestern United States20 objects
- Utah20 objects
- Grand Gulch #9, San Juan County, Southern Utah19 objects
- NV-Ch-18 (Lovelock Cave), Churchill County, Nevada11 objects
- California2 objects
- NV-Pe-14, Pershing County, Nevada2 objects
- Pershing County, Nevada2 objects
- CA-Mnt-250, Church Creek, Monterey County1 objects
- Central California1 objects
- Central California coast1 objects
- Church Creek, Monterey County, California1 objects