Marree Man is a very big picture on the ground made by people in Australia a long time ago. The people painted the picture by removing the rocks from the ground to make shapes. The picture is so big that you can only see it from high up in the sky. Some people think the picture looks like a man with a big hat, but nobody knows for sure what it really is supposed to be. It's a mystery! People still like to look at the picture and try to figure out what it means.