Painted Hills, John Day Fossil Beds National Monument, Oregon, USA

Painted Hills, John Day Fossil Beds National Monument, Oregon, USA

Painted Hills is named after the colorful layers of its hills corresponding to various geological eras, formed when the area was an ancient river floodplain. An abundance of fossil remains of early horses, camels, and rhinoceroses in the Painted Hills unit makes the area particularly important to vertebrate paleontologists.