The Toadstool Hoodoos are located in Grand Staircase-Escalante National Monument in an area known as The Rimrocks. They are balanced rock formations that look like toadstools or mushrooms. The base of the hoodoo is Entrada sandstone and the top is made of Dakota sandstone. The unique mushroom shape comes from erosion. Since the Entrada sandstone is softer, it wears away while the top stays intact. Photo © copyright by Robert Faucher.