![File:Bower Cave, Yosemite, from Robert N. Dennis collection of stereoscopic views 2.jpg - Wikimedia Commons File:Bower Cave, Yosemite, from Robert N. Dennis collection of stereoscopic views 2.jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/a/a7/Bower_Cave%2C_Yosemite%2C_from_Robert_N._Dennis_collection_of_stereoscopic_views_2.jpg)
File:Bower Cave, Yosemite, from Robert N. Dennis collection of stereoscopic views 2.jpg - Wikimedia Commons
Geotripper: Oo'-tin (Bower Cave) in the Sierra Nevada: Caverns, Lost Pictures, Dances, and the Origin Place of Humans (maybe)
![Mitchell Caverns - Mojave National Preserve, California. Would be a fun weekend trip from San Diego | Luoghi, Luoghi da visitare Mitchell Caverns - Mojave National Preserve, California. Would be a fun weekend trip from San Diego | Luoghi, Luoghi da visitare](https://i.pinimg.com/564x/11/bb/d6/11bbd651385fb0a8b2987648ce8a11fb.jpg)
Mitchell Caverns - Mojave National Preserve, California. Would be a fun weekend trip from San Diego | Luoghi, Luoghi da visitare
![Crystal Cave Interior Formations, Dome in Dome room. - PICRYL - Public Domain Media Search Engine Public Domain Search Crystal Cave Interior Formations, Dome in Dome room. - PICRYL - Public Domain Media Search Engine Public Domain Search](https://cdn2.picryl.com/photo/1950/01/01/crystal-cave-interior-formations-dome-in-dome-room-e8bde4-1024.jpg)