From the surface, Antelope Canyon, in Arizona, looks merely like a big but unremarkable crevice in the rock. Gouged out by flash flooding and the slower force of a creek, however, the sleek slot canyon - as this type of natural formation is called - runs deep. The canyon's walls glow orange and purple among other colours, in a dazzling palette that captivates visitors.
what about the Bungle Bungles in Western Australia, or Cappadocia on Turkey, they are both amazing.
I think they both deserve a mention.
I am amazed that only Wave Rock was mentioned from WA. The lesser known Elachbutin rock has a very similar formation (by the way - multicolours are caused by lichens and other forms of primitive life, not necessariuly by different colours of granite). In addition, there are the amazing Bungle Bungles, horizontally striped in red and black; the biggest monolith in the world (Mt. Augustus, NOT Uluru) and a fossilised coral reef - Windjana - just off the Gibb River Road.