Painted Hills

The Painted Hills, the most visited of the three units of John Day Fossil Beds National Monument in the high desert of north-central Oregon, are among the most stunning and otherworldly landscapes in the Pacific Northwest — a series of low, smoothly rounded hills of ancient volcanic claystone banded in rich layers of red, gold, tan, and black that shift in hue and intensity with the angle of sunlight, moisture, and season, creating a landscape that looks painted by a master hand rather than sculpted by geology.

These hills preserve one of the finest early Cenozoic fossil records in the world — the 33-million-year-old Eocene and Oligocene sediments have yielded an extraordinary array of extinct mammals (ancient horses, tapirs, oreodonts, saber-toothed cats) that reveal the dramatic transformation of Oregon’s climate and ecosystems following the Eocene extinction event. The Painted Hills are designated one of the Seven Wonders of Oregon and are among the most photographed landscapes in the Pacific Northwest — a treasured natural and scientific icon of the Pacific Northwest.

The Painted Hills unit offers hiking four short interpretive trails (the Carroll Rim Trail is the finest overview — 1.6 miles round trip, 400 feet elevation gain to a wide ridge with the most commanding panoramic view of the Painted Hills landscape; the Painted Hills Overlook Trail is a quick 0.5-mile paved path to a classic hilltop viewpoint; the Leaf Hill Trail loops through the fossil plant beds; the Painted Cove Trail is a 0.25-mile boardwalk into the richly colored red and black hills), photography (the Painted Hills are one of the finest landscape-photography subjects in the Pacific Northwest — the golden-hour light of early morning and late afternoon transforms the hill colors most dramatically, and the hills glow most vividly when slightly wet after rain), and fossil interpretation at the visitor center (the Thomas Condon Paleontology Center in the Sheep Rock unit, 70 miles east, has the finest fossil museum; the Painted Hills visitor contact station has basic displays). The Painted Hills Overlook and the Carroll Rim sunrise are the singular draws.

Spring (March through May) is the finest season — the hills are often damp from spring rains (the wet claystones show the most vivid color saturation), the rabbitbrush and bunchgrass prairie wildflowers are in bloom across the monument, and the high desert air is clear and clean with moderate temperatures. The hills are accessible year-round (the monument is open daily), but summer (June through August) brings 90-100°F heat in the John Day basin, and the dry, cracked claystones show less color intensity than in wet conditions. Fall is excellent for the clear air and the golden bunchgrass color against the red hills. Spring and fall are the recommendations; avoid summer midday heat. Arrive early morning or late afternoon for the best photographic light year-round.

The John Day Fossil Beds have been studied scientifically since 1862, when geologist and naturalist Thomas Condon began collecting vertebrate fossils in the John Day Basin, recognizing the extraordinary richness of the early Cenozoic fossil record preserved in the basin’s volcanic sediments. The Painted Hills’ colored claystones reflect a succession of ancient soils (paleosols) and volcanic ash deposits laid down over a period of 5 million years from approximately 33 to 28 million years ago, spanning the Eocene-Oligocene boundary and the major global climate shift that transformed Oregon from subtropical forest to open woodland and grassland. The monument was established in 1974 to protect the fossil beds. The Painted Hills unit (named for the vivid coloration of the claystones) is the most visually dramatic of the three units.

The Painted Hills’ extraordinary coloration reflects the mineralogical composition of ancient paleosols (fossil soils) buried and preserved in successive layers of volcanic ash and alluvial sediment deposited in a river-floodplain environment 33-28 million years ago. The brilliant red and orange colors result from oxidized iron minerals (hematite, goethite) in well-drained, warm, wet ancient soils; the black bands are rich in manganese oxides from wet, poorly drained ancient wetland soils; the tan and gold colors reflect unoxidized volcanic ash and clay minerals. Each color band represents a different ancient environment or moisture regime. The claystones swell and shrink dramatically with moisture change, creating the smooth, unvegetated surfaces that allow the color to show; this same swelling makes the hills extremely fragile and irreplaceable if walked on. The overlying Columbia River Basalt capped many of the hills before erosion removed it, creating the monument’s rounded profile.

The Painted Hills unit’s high-desert ecosystem supports a diverse wildlife community of the northern Great Basin — mule deer (browsing the rabbitbrush and sage margins), pronghorn (visible on the open bunchgrass flats east of the unit), coyotes (common throughout), black-tailed jackrabbits, Townsend’s ground squirrels (abundant), golden eagles and ferruginous hawks (soaring over the open landscape), prairie falcons (nesting on the rimrock near the monument), western meadowlarks (singing from the bunchgrass prairie), horned larks, sage sparrows, and greater sage-grouse (in the surrounding BLM lands). Rattlesnakes (western rattlesnake) are present in the monument; watch your step on rocky margins. The stark landscape belies a surprisingly rich desert fauna.

The Painted Hills unit sits within the high-desert ecosystem of the John Day Basin — a cold, semi-arid basin at 2,000-3,000 feet elevation with cold winters and hot, dry summers. The vegetation is classic northern Great Basin bunchgrass and shrubland (Idaho fescue, bluebunch wheatgrass, big sagebrush, rabbitbrush, and bitterbrush on the surrounding slopes). The Painted Hills claystones themselves are essentially unvegetated because the swelling and shrinking of the smectite clay destroys any plant roots that attempt to colonize the surface — this is the key ecological feature that allows the color to remain visible. Protecting the claystones from foot traffic (which compacts and damages the delicate clay surface, creating permanent scars visible for decades) is the monument’s primary ecological conservation challenge.

The Painted Hills hold a treasured place among the natural icons of Oregon — designated one of the Seven Wonders of Oregon, one of the most vivid and photogenic landscape in the Pacific Northwest, a world-class paleontological record of the Eocene-Oligocene transition, and a symbol of the extraordinary geological diversity of the high-desert interior of Oregon that most visitors overlook in favor of the coast and Cascades. For Oregonians and for Western landscape photographers, the Painted Hills are an unmissable destination — a landscape unlike anything else in the Pacific Northwest. The Painted Hills are a cherished natural and scientific icon of Oregon.

The Painted Hills unit is 9 miles northwest of the town of Mitchell, Oregon, on U.S. 26 in Wheeler County, approximately 3 hours from Portland and 2 hours from Bend. From Mitchell, drive northwest on US-26 for 3 miles, then turn left on Bear Creek Road and follow signs 6 miles to the unit. The road is paved to the unit; parking areas at each trailhead are unpaved but accessible by passenger car. Mitchell (9 miles east) has basic services (gas, limited food). Prineville (60 miles west) and John Day (60 miles east) have full services. A daily use fee or America the Beautiful Pass is required. The NPS visitor contact station at the Painted Hills unit is open seasonally; the Thomas Condon Paleontology Center (70 miles east, near Sheep Rock) has the full fossil museum and is recommended as a companion stop.

The National Park Service manages John Day Fossil Beds National Monument. The single most critical conservation rule at the Painted Hills is to stay on designated trails and boardwalks at all times and never walk on the hills themselves — the colored claystones are irreplaceable and are easily and permanently damaged by foot traffic (a single bootprint compacts the fragile clay surface and creates a scar that remains visible for decades; the hills cannot recover on any human timescale). The closure is clearly signed and enforced. Fossil collecting is strictly prohibited (federal law; any fossil material is protected). Pack out all trash. Please do not fly drones in the monument without a permit (the quiet of the high desert is part of the experience, and drone disturbance to wildlife is a management concern).

The Painted Hills area is remote (limited cell service; the nearest urgent care is in Prineville, 60 miles west); carry a first-aid kit and extra water for any visit. Summer temperatures in the John Day Basin exceed 100°F — carry a minimum of 2 liters of water per person; hike in early morning; do not underestimate the desert heat. The high desert roads (particularly gravel roads off US-26) can be rough and occasionally impassable when wet — check current road conditions. Western rattlesnakes are present in rocky margins; watch where you step and place your hands. The trails themselves are short and gentle (most under 2 miles) and appropriate for all fitness levels. Respect the summer heat, the remote location, and the rattlesnakes.

NPS entrance fee (daily use fee or America the Beautiful Pass). Stay on designated trails and boardwalks at all times — absolutely no walking on the colored hills (enforced; significant fine). No fossil or rock collecting. Pets on leash; keep pets on the trail and do not allow them to walk on the hills. No drones without NPS permit. Pack out all trash (limited facilities at the unit). Check NPS for current trail conditions, visitor contact station hours, and any seasonal programs before visiting.

The Sheep Rock unit of John Day Fossil Beds NM (70 miles east via US-26 and US-19 — the Thomas Condon Paleontology Center, one of the finest fossil museums in the Pacific Northwest, is here; the blue-green Sheep Rock formation and the Cathedral Rock formations are geologically spectacular), the town of Mitchell (9 miles east — a charming tiny high-desert town with the Oregon Badlands look), Painted Hills motel and dining options in Mitchell, Prineville (60 miles west — full services, gateway to the Ochoco National Forest), and the Ochoco National Forest (the Painted Hills are at the western edge of the Ochoco’s ponderosa pine country) define the region. The Painted Hills are the anchor of the John Day Fossil Beds complex; combining all three units in a 2-day trip from Bend is the optimal approach.

Arrive at sunrise or within 30 minutes of it for the finest Painted Hills photography — the low-angle morning light rakes across the hill surfaces and produces the most intense color saturation and shadow contrast; the hills literally glow red and gold in the first hour after sunrise. Visit in spring (April and May) after a night of rain, when the damp claystones show the richest, most saturated colors. Stand at the Carroll Rim overlook (the high point of the 1.6-mile Carroll Rim Trail) for the most panoramic view of the entire Painted Hills landscape with the high desert stretching away in every direction. Plan 2-3 hours for the Painted Hills unit and then drive 70 miles east to the Sheep Rock unit and the Thomas Condon Paleontology Center for the complete John Day Fossil Beds experience.