The Three Sisters are an unusual rock formation in the Blue Mountains of New South Wales, Australia, on the north escarpment of the Jamison Valley. They are located close to the town of Katoomba and are one of the Blue Mountains’ best known sites, towering above the Jamison Valley. Their names are Meehni (922 m), Wimlah (918 m), and Gunnedoo (906 m).
The commonly told legend of the Three Sisters is that three sisters, Meehni, Wimlah and Gunnedoo, lived in the Jamison Valley as members of the Katoomba tribe. They fell in love with three men from the neighbouring Nepean tribe, but marriage was forbidden by tribal law. The brothers were not happy to accept this law and so decided to capture the three sisters. A major tribal battle ensued, and the sisters were turned to stone by an elder to protect them, but he was killed in the fighting and no one else could turn them back.
This legend is commonly claimed to be an Indigenous Australian Dreamtime legend. However, the legend as is commonly told may be traced back to non-indigenous schoolgirl Patricia Stone, who gave the formations their “indigenous” names.
More information: https://en.wikipedia.org/wiki/Three_Sisters_(Australia)