In the creation story of the Dreaming, the Rainbow Serpent fashioned the earth and then returned to a spot east of the Kimberleys at a place where the rainbow meets the earth. The Rainbow Serpent's eggs fossilised and became what non-Aborigines now call the Devils Marbles. The Aborigines know them as Karlukarlu. This collection of huge, round, red-colored boulders is found in the Tennant Creek region of Australia's Northern Territory.
The Olgas, Australia - a group of 36 large domed rock formations located about 227 miles southwest of Alice Springs, in the southern part of the Northern Territory, central Australia. The highest point is 1,791 feet high. (Uluru is 16 miles to the east.) - photo by Dani℮l, via Flickr - info from Wikipedia