William Ernest Powell Giles, best known as Ernest Giles, was an Australian explorer who led five major expeditions to parts of South Australia and Western Australia.

Lake Amadeus is a large salt lake in the southwest corner of Northern Territory of Australia, about 50 kilometres (31 mi) north of Uluru. The smaller Lake Neale is adjacent to the northwest. It is part of the Amadeus Basin that was filled with the erosion products of the Petermann Orogeny.