Lake Mungo has been dry since the last ice age, but at some distant time before that, the Willandra Creek
flowed into a series of large freshwater lakes here with fish, mussels, turtles and yabbies in a fertile
area supporting a large population. During another less distant age, the prevailing westerly winds blew sand and
clay from the lake bed across to the eastern shore, forming the "lunettes" - the dunes just visible beyond
the lake in this picture. The dunes have eroded since the area was over-grazed and have revealed archaeological
evidence of the life of these people, and of ritual cremations, possibly the earliest such evidence in the world.