Petroglyph point trail
Petroglyph of human figure
Circle petroglyph
Wall covered in petroglyphs
Native american rock art
Zoomorphic petroglyph
Anthropomorphic petroglyph
Rock art at Petroglyph Point
Petroglyphs at Tulelake, California
Petroglyphs carved into rock wall
Petroglyph point
Cliff with petroglyphs
Juniper tree, Devils Homestead Flow
Schonchin Butte
Narrow passage in Mushpot Cave
Cave ceiling with lavacicles
Lavacicles in Mushpot Cave
Dripstone in Mushpot cave
Pull-out in lava tube
Dripstone pulling away from the walls of the lava tube
Mushpot Cave
Entrance to Sentinel Cave
Fractured boulder
Passage through Sentinel Cave
Sentinel Cave, Lava Beds National Monument
Pit in Sentinel Cave
Tunnel in Sentinel Cave
Skylight in Sentinel Cave
Lower entrance to Sentinel Cave
Ceiling of lava tube
Skull Cave opening
Skull Cave entrance
Skull Cave
Skull Cave, a very large lava tube