Uluru, also known as Ayers Rock, is a sandstone inselberg located in the Northern Territory , in the center of the main island of Australia. It rises 348 meters above the plain. It is a sacred place for the indigenous peoples and Pitjantjatjara Yankunytjatjara , the basis of which they sometimes practice rituals and produce rock of great cultural importance paintings. This, combined with geological and hydrological peculiarities , as well as remarkable colors it can take , especially at sunset , made a symbol of Australia, since its discovery by Westerners in 1873. It is classified on the World Heritage List of UNESCO through the Uluru- Kata Tjuta National Park it is, with Kata Tjuta (also known as Olga Mountains) , one of the iconic formations. This park protects fragile species adapted to the arid climate of the outback, and are an important resource for Anangu . He became a leading tourist attraction since the 1940s . This status has caused various reactions of the aborigines, especially when some of the 400,000 tourists who parade annually venture to climb the rock.