Several salt lakes that usually remain dry can be observed in this image of South Australia. By the top center is Lake Torrens. Usually a dry salt flat, it has only been filled with water once in the past 150 years. Thunderstorms occasionally provide a small amount of water in the lake, when this occurs the area attracts a variety of birdlife.
Visible to its west is Lake Gairdner, a large endorheic lake in central South Australia, in the Gawler Ranges. When it is flooded, it is considered the fourth largest salt lake in Australia. The lake is over 160 km (99 mi) long and 48 km (30 mi) across with salt over 1.2 metres (4 ft) thick in some places.