The John Day Fossil Beds are a unique geological area located in Oregon, known for its rich deposits of fossils from the Cenozoic Era. This region showcases a variety of ancient plant and animal life, including mammoths and horses, providing valuable insights into Earth's history. The colorful rock formations, shaped by volcanic activity and erosion, attract both scientists and visitors. Established as a national monument in 1975, the John Day Fossil Beds National Monument consists of three main units: Sheep Rock, Clarno, and Painted Hills. Each unit features distinct landscapes and fossil sites, making it a popular destination for paleontologists and nature enthusiasts alike.