Lake Amadeus: Lake in Northern Territory in Australia

It is about 50 kilometres (31 mi) north of Uluṟu. The lake is 180 km long and 10 km wide. It is the largest salt lake in the Northern Territory. Because of the dryness of the area, the lake is usually a dry salt crust. When it rains enough, water flows through it towards the east. It eventually connects to the Finke River. Lake Amadeus holds up to 600 million tonnes of salt. The groundwater soaks into the ground, and the lake supports several reliable springs.

Lake Amadeus Pantu (in Pitjantjatjara)
from space (November 1994)
Location	Northern Territory
Coordinates	24°48′S 130°54′E / 24.8°S 130.9°E / -24.8; 130.9
Type	salt lake
Basin countries	Australia
Max. length	180 km
Max. width	10 km
Surface area	1032 km²
Surface elevation	450 m

The first European to find the lake was the explorer Ernest Giles in 1872. He had seen Kata Tjuta from far away and was making his way there. The lake blocked his path. He could not go over it because the dry lake bed was not able to hold the weight of his horses. He described the lake as "an infernal lake of mud and brine". Giles was going to name it "Lake Ferdinand" after Baron Ferdinand von Mueller. But Mueller asked Giles to instead name it after King Amadeus I of Spain. Amadeus had honoured Mueller a few years before.

Lake Amadeus is on Aboriginal land, and is covered by the Katiti and Petermann Aboriginal Land Trusts.