Wow! That's was my first impression when I saw the satellite photo from Ayers Rock / Uluru, a red sandstone rock formation from central Australia. The rock is 346 metres high and has a perimeter of 8 km.
Ayers Rock appears to change colour around the day and year, as you can see in the photos from the mini-panoramio above. That's because of minerals like feldspar reflect the red light of sunrise and sunset. The rock gets its rust colour from oxidation and during wet periods it changes to grey.
There is a lot of superstition around Ayers Rock. Aborigines do not climb Ayers Rock because of spiritual significance, there are restricted areas for photos and you are supposed to suffer misfortune if you take away stones from the area.