Editing Wyperfeld National Park (section)

==History==
Like most of north-western Victoria, Wyperfeld was a shallow sea from about 25 million years ago until fairly recent times. The current landforms took shape as the sea gradually retreated from 40,000 to 15,000 years ago, leaving a vast expanse of sandy sediment which formed into [[dune|sand dunes]] as it dried.

Before European settlement, a network of ephemeral lakes in the area filled and emptied, on average, about every 20 years, typically remaining dry for about half that period. More recently, agricultural irrigation and drainage projects in the surrounding areas have cut off a significant part of Wyperfeld's water supply. Consequently, the lakes have not been completely filled since 1975, and had drained again just two years later.