For 10 points—name this often dry lake, which, at fifteen feet below sea level, is the lowest point in Australia.
The Goyder Channel joins the northern and southern parts of this lake, and its southeastern coast consists of sand cliffs. The Tirari and Simpson Deserts border it to the north and east, and the main islands found within it are Brooks and Dulhunty. For 10 points—name this often dry lake, which, at fifteen feet below sea level, is the lowest point in Australia.
The Goyder Channel joins the northern and southern parts of this lake, and its southeastern coast consists of sand cliffs.
Lake {Eyre}