Painted Hills (John Day Fossil Beds National Monument)

The Painted Hills unit of John Day Fossil Beds National Monument occupies roughly 3,000 acres in Wheeler County near the community of Mitchell, approximately 3.5 hours east of Portland via US-26. The site preserves layered bentonite clay hills formed from ancient volcanic ash deposits that have weathered over 33 million years into horizontal bands of red, gold, black, and tan. The colors result from varying mineral concentrations: iron oxides produce the deep reds and yellows, while manganese and carbon compounds create the dark bands. Color intensity shifts dramatically with moisture, time of day, and season — after rain the saturated clays appear almost luminous; in dry summer light the tones are more subdued but the geometric banding is more precise. Five short trails totaling about 3 miles access the main formations without requiring strenuous hiking. The Painted Hills Overlook Trail (0.5 miles) climbs a short rise to a sweeping view of the main color sequence. The Carroll Rim Trail (1.6 miles round trip, moderately strenuous) ascends to a ridge offering the widest panorama of the unit. The Painted Cove Trail (0.25 miles, paved) is an accessible loop around the base of a densely colored small hill. The Leaf Hill Trail accesses Eocene plant fossil beds where ancient specimens have been excavated over more than a century of paleontological work. A seasonal visitor center provides geological and paleontological context. Mitchell, 9 miles away, offers limited food and lodging; staying near Prineville or Bend allows access to the Painted Hills and the Thomas Condon Paleontology Center in Fossil within a single day.