Lake Eyre is the world�s largest salt-lake. Bigger than anything in the USA, there is however, no Salt Lake City here. Lake Eyre covers 8430 km sq, is 144 km long and 77 km wide. At its lowest point, it is 15.2 m below sea-level and drains more than a sixth of the continent. Much of the lake is below sea-level. When filled with water (an event which has only occurred 3 times in living history), the lake becomes alive with birds. So, don�t come here expecting to do much bird-watching unless you�re prepared to wait for the next flooding. The expansive salt pan of Lake Eyre, ideally flat and featureless, was used by Sir Donald Campbell to set a world land-speed record in 1964.