This photo was taken on Jan. 3, 2003. It shows Lake Amadeus, which is located in the Northern Territory of Australia. It is described as a "salty, mud basin" that can contain a few inches of water. When in this condition, it can be as long as 90 miles and as wide as 12 miles. It was discovered by Ernest Giles in 1872 and is named for King Amadeus of Spain. The USGS reports that when the lake is dry, it looks like "a glistening sheet of white salt crystals."