Lake Wells is located in the Western Australia. The lake sits above an ancient river system. Channels carved in granite/greenstone basement were filled with sand and clay during the last 23 million years. And the environment changed from temperate rainforest to arid desert during those millions of years. Paleochannels are often a great source of various resources. And this animation represents the case when this resource is a potash. Sand layers present in paleochannel are filled with brine rich in dissolved salts. When this brine is brought to surface and evaporated – potash is produced.