the top of one of the red sandstones in papago park in tempe arizona with its numerous caves

adventure ancient arizona art australia boulders bunda cavern cliff color crocodile desert devonian fourwheeldrive geologicalformation gibbriverroad gorge green hiking indigenous landscape lennard limestone mountain mountaintop nationalpark nature offroad outback overcast paintings papagopark period phoenix range redrocks redsandstone remote river rock rough savannah shrubs sky softstone stone tunnel usa windjana