Uluru
Uluru (also known by its British name: Ayers Rock), is one of the biggest monoliths (large, single rock forms) in the world. 600 million years ago it was located at the bottom of the ocean, and now stands 348m above the ground. Scientists state that it also runs deep under the ground, but there is no sure way of telling exactly how far down it goes (possibly around 2.5km). Uluru is 3.6kms long and 1.9kms wide with a reasonably flat summit. The surface has been eroded into caves, ridges and valleys, and surface oxidation has given Uluru its famous red-orange hue. It is situated west of the Simpson Desert, an area that has been occupied by Aboriginals for around 10,000 years.