The Willandra Lakes Region’s lakes dried up around 18,500 years ago when the watercourse that had nourished them dried up. But they left behind valuable pieces of the Pleistocene era, which is when humans changed into what they are today. Archaeologists have found bones and things like stone tools, hearths, and grindstones that they think were used to make flour from grass seeds. Nearly 460 fossilized human footprints are the largest collection of this kind in the world. They show that men, women, and children used to walk along the lakeshores. Image by Liuguangxi from Pexels.