Part of the sacred stone monolith named OLGAS, only about 40 kms far from Uluru, Ayers Rock & unlike Uluru essentially less commercially presented. Spectrum frequency of sun beams changes at sunset to the shorter wave length, this causes, that the color of stone varies in 4-5 variable colors, ranging from light red to dark purple (the other way in the morning). It is great tourist attraction to watch color changes of these stones - Uluru & Olgas - in the time of sunrise & sunset.