The Blue Mountains is a mountainous region in New South Wales, Australia. It borders on Sydney's metropolitan area, its foothills starting about 50 kilometres (31 miles) west of the state capital.
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 a neighbouring tribe (the Nepean tribe), but marriage was forbidden by tribal law. The brothers were not happy to accept this law and so decided to use force 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.
The traditional custodians of the land in what is now know as the Jamison Valley are the Aboriginal Gundungurra people who are estimated to have lived in the region for 40,000 years, stretching south towards the Burragorang Valley, north of Goulburn.
The Jamison Valley was named by Governor Lachlan Macquarie in honour of Sir John Jamison (1776-1844), a prominent landowner and physician who visited the Blue Mountains with the governor in 1815.