the top of one of the red sandstones with its numerous caves and visible erosion under the cloudy sky

ancient arizona australia butte cavern cliff color crocodile desert devonian erosion fresh gibbriverroad gorge green gully indigenous karst landscape lennard limestone mountain mountaintop nature offroad outback outdoors overcast paintings peak phoenix primeval range redrocks redsandstone remote rock rough shrubs sky softstone stone tourism tree tunnel unitedsates usa water windjana