(photo reproduced with permission of the photographer Garry Hayes, Modesto Junior College in California (USA)

The Three Sisters, a group of three step-sided sandstone pillars, is located at Echo Point, Katoomba, 110 kilometres west of Sydney. They are part of the Blue Mountains. 

The pillars were formed by wind and water cutting and wearing away soft parts of the rock in the mountains. This wearing away of rock is called erosion. Read more about erosion here erosion.htm

In an Aboriginal legend the Three Sisters are given names, Meehni (922 metres tall), Wimlah (918 metres tall) and Gunnedoo (906 metres tall); they were young girls who were turned to stone for their bad behaviour.

Read the Aboriginal legend of how the Three Sisters were formed here
http://www.bluemts.com.au/tourist/thingsToDo/threeSisters.asp

Go here to see photos of the Blue Mountains and the Three Sisters http://www.penrithweb.com/panorama/pan-3sisters.html