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One of the core highlights of the expansive Blue Mountains National Park, the Three Sisters rock formation outside Katoomba is one of Australia’s most recognisable natural landmarks. Named after a tale detailing the saga of 3 sisters who were turned to stone in native aboriginal folklore, the triad of rock formations were formed by erosion over the course of hundreds of thousands of years. Most commonly viewed from the lookout at Echo Point, the three sisters take on a different look at different times of the day, and reach over 922m above sea level at their highest point.