Uluru in the Northern Territory is one of Australia’s most recognisable natural icons—a huge, rounded sandstone monolith, 9.4 kilometres in circumference, rising to a height of more than 340 metres above the plain. Uluru is a unique and beautiful place that has spiritual and cultural significance to the traditional Indigenous landowners of the area, the Anangu people. One of its most striking features is its apparent ability to ‘change colour’ as the light plays across it during the course of a day.