Page "Uluṟu-Kata Tjuṯa National Park" Paragraph 31

From a geological point of view, analysis of Uluru-Kata Tjuta and Watarrka National Parks reveals an awe-inspiring history.

500 million years ago, the entire area was covered by an inland sea and over many centuries, sand and mud fell to the bottom of the sea, creating rock and sandstone.

Kata Tjuta's domes are the eroded remains of sedimentary rock from the seabed, while Uluru is a relict of the coarse grained, mineral-rich sandstone called arkose.