Three Sisters (Blue Mountains, Australia)
The name, "Three Sisters," comes from an Aboriginal legend. In the story, a witch-doctor turns his three daughters into stone to save them from a mythical monster.
The area was once a seabed that rose over a long period and subsequently eroded, leaving tall formations.
This photo illustrates the haze from which the Blue Mountains take their name. The haze is caused by the evaporation of oil from eucalyptus trees.