Ayers Rock (called Uluru by the native people who consider it a sacred place) is a striking monolith which is 3.6 km long and rises almost 350 meters above the vast pancake-flat surrounding red sandy plain. Its size has to be experienced in person to be believed, yet supposedly two third of it is still buried below the ground. Besides its monumental size, the detail of its gullies and caves, as well as the colors that it takes at different times of the day all add to its interest. The native people prefer it that the Rock not be climbed. Photography of some formations on the Rock that have a particularly important religious value, such as the "Brain" (seen from the Sunrise Viewing area) is prohibited. Ayers Rock is part of Uluru-Kata Tjuta National Park, a UNESCO World Heritage Site that also includes the Olgas.