Painted Hills State Park is a mesmerizing natural wonder that boasts an array of vibrant and colorful geological formations. The park's name derives from the rolling hills adorned with layers of red, gold, black and orange soil - colors which change dramatically under different light conditions throughout the day. This surreal landscape was formed over 35 million years ago by volcanic ash deposits layered with plant material and minerals creating unique striations across each hillside. It's part of John Day Fossil Beds National Monument where visitors can explore trails leading to panoramic views or discover ancient fossils at its museum exhibits.