the top of one of the red sandstones in the papago park in tempe

adventure ancient arizona australia cavern cliff cloudy color crocodile desert devonian erosion geology gibbriverroad gorge green gully indigenous karst landscape lennard lillimoorloora limestone mountain mountaintop nationalpark offroad outback overcast paintings park phoenix range redrocks redsandstone reef river rough shrubs sky softstone tourism trails travel tunnel unitedsates usa western windjana