happy woman explorer holds a flashlight while caving and spelunking underground at lava beds national monument in california

adventure america attraction basin bed beds brush california cascade cave caving conservation desert entrance environment explore explorer female fields flashlight geology girl great happy hiking holds landscape lava modoc monument national nature outdoors park range recreation reservation scenic shrubland sierraklamath siskiyou spelunker spelunking states tourism tourist travel trip underground undiscovered united usa vacation volcanic volcano while woman