- North America✖Remove constraint Collection place: North America6 objects
- The Americas6 objects
- United States6 objects
- Nevada4 objects
- Churchill County, Nevada3 objects
- Grimes Point Caves, Churchill County, Nevada3 objects
- NV-Ch-16 (Hidden Cave), Churchill County, Nevada3 objects
- Amador County, California2 objects
- CA-Ama-3 (Bamert Cave), Amador County, California2 objects
- California2 objects
- Northeastern California2 objects
- Northern California2 objects
- Northern Sierras, Northern California2 objects
- Lincoln County, Nevada1 objects
- NV-Ln-9, Lincoln County, Nevada1 objects
- NV-Ln-9b, Lincoln County, Nevada1 objects