Barrow Creek

Barrow Creek was a town in Australia's Gibson Desert, between Darwin and Alice Springs, some 450 kilometres northeast of Ayers Rock. Paul Forbes' Land Rover broke down near the town because of the extreme desert heat. As he was letting his overheated engine cool, the Seventh Doctor arrived and told him to move three steps to the left. Baffled but compliant, Forbes did so, just in time to avoid being hit by a falling chunk of Skylab. (PROSE: Three Steps to the Left)

Behind the scenes
In reality, the distance between Barrow Creek and Uluru, at least by car, is closer to 750 kilometres.