41.   We followed an old stone fence to what had been a dugout with a massive rock wall that still stands.

42.   When they reach the rock wall, some kneel and pray before sipping the water or splashing it on themselves.

43.   Yang Yang, the male, curled in a cubbyhole chiseled out of a gray rock wall.

44.   Deep ravines and crevasses, avalanches, extreme ice faces and rock walls stood in the way as they struggled upward.

45.   For tens of thousands of years, the indigenous people marked their presence in Australia by pressing smeared hands against the rock walls of caves.

46.   It smashed into the rock wall damaging three parked cars.

47.   Protruding through the clouds, the wet rock walls looked like the vast sides of prehistoric beasts.

48.   The newly installed lighting revealed hieroglyph incised into rock walls.

49.   The newly-installed lighting revealed hieroglyph incised into their rock walls.

50.   The sculptures are mostly of faces peaking out from the rock walls.