A place like no other near Greeley in Colorado
Pawnee National Grassland spans 193,000 acres of windswept shortgrass prairie in northeastern Colorado, creating one of the most expansive and ecologically significant protected landscapes on the Great Plains. Located about 35 miles east of Greeley, this federally managed grassland preserves a vanishing ecosystem that once stretched across millions of acres of the American West. The area features dramatic geological formations, including the Pawnee Buttes that rise abruptly from the flat prairie, and provides habitat for an extraordinary collection of wildlife species that depend on intact native grasslands for survival. Visitors who make the journey from Greeley discover a landscape of subtle beauty and profound solitude unlike anywhere else in Colorado.
The history of Pawnee National Grassland begins with the Native American tribes who inhabited these plains for thousands of years before European settlement. The Pawnee people, for whom the grassland is named, along with the Arapaho, Cheyenne, and Sioux, relied on the region’s abundant bison herds and native plants for sustenance and cultural practices. Evidence of their presence can still be found throughout the grassland in the form of teepee rings and other archaeological remnants that speak to a way of life stretching back centuries.
The arrival of homesteaders in the late nineteenth century transformed the landscape dramatically. Encouraged by the Homestead Act of 1862, settlers plowed the native prairie to plant wheat and other crops, believing cultivation would permanently change the climate. However, the Dust Bowl of the 1930s devastated the region, as severe drought and unsustainable farming practices stripped away topsoil in massive dust storms that blotted out the sun. The federal government intervened by purchasing failed homesteads and eroded farmland, eventually consolidating these parcels into the managed grassland that exists today under the stewardship of the United States Forest Service. The ongoing restoration work represents one of the largest prairie conservation projects in the western United States.
The Pawnee Buttes Trail provides the signature hiking experience within the grassland, leading visitors approximately four miles round trip across open prairie to the base of the iconic buttes. These twin sandstone formations rise nearly 300 feet above the surrounding plains, their layered strata revealing millions of years of geological history. The trail offers unobstructed views and the sensation of walking through a landscape that has changed little since the days of westward expansion. Hikers should bring ample water and sun protection, as shade is essentially nonexistent on the open prairie.
Birding ranks among the premier recreational activities at Pawnee National Grassland, drawing enthusiasts from across the country each spring and summer. The grassland hosts one of the highest concentrations of nesting raptors in Colorado, including golden eagles, ferruginous hawks, and prairie falcons. The spring mating season brings elaborate courtship displays from greater sage grouse and sharp-tailed grouse, which perform their distinctive dancing rituals on traditional breeding grounds known as leks. The Colorado Birding Trail designates multiple prime viewing locations throughout the grassland for both novice and experienced birders.
Photography opportunities abound throughout the grassland, particularly during the golden hours of sunrise and sunset when low-angle light paints the prairie in vivid hues. The Pawnee Buttes themselves rank among the most photographed natural features in northeastern Colorado, while abandoned homesteads and windmills offer compelling subjects for those interested in the remnants of frontier settlement. Wildflower enthusiasts find the grassland especially rewarding during May and June, when prairie wildflowers including Indian paintbrush, prairie coneflower, and locoweed carpet the landscape in seasonal color.
The Crow Valley Recreation Area serves as the primary developed access point on the grassland’s western edge, featuring picnic shelters, restrooms, and interpretive displays about the prairie ecosystem. This area provides the only shaded picnic spots within the grassland, courtesy of a grove of cottonwood trees planted decades ago. The nearby interpretive trail introduces visitors to the flora and fauna of the shortgrass prairie through educational signage suitable for families and first-time prairie explorers.
Wildlife viewing delivers consistent rewards for patient observers throughout the grassland. Pronghorn antelope, the fastest land mammal in North America, can frequently be spotted grazing on the open plains, their white rump patches flashing as they flee perceived threats. Mule deer seek shelter in draws and creek bottoms, while coyotes patrol the ridges in search of small mammals and rodents. The grassland also supports a robust population of black-tailed prairie dogs, whose extensive town complexes provide critical habitat for burrowing owls, badgers, and rattlesnakes.
The homestead ruins scattered across Pawnee National Grassland tell the human story of this challenging landscape. Crumbling stone foundations, rusted farm equipment, and isolated windmills stand as monuments to the determination of homesteaders who attempted to carve a living from the shortgrass prairie. These remnants, when observed alongside the restored native vegetation that now surrounds them, offer a powerful illustration of nature’s resilience and the limits of human ambition in an unforgiving environment.
Late spring and early summer, from May through June, offer the most rewarding conditions at Pawnee National Grassland. Wildflowers reach their peak bloom during these months, transforming the prairie into a tapestry of color and fragrance. Migratory songbirds arrive in abundance, and the courtship displays of resident grouse species provide unforgettable wildlife spectacles for those willing to rise before dawn. Temperatures during this period typically range from the mid-50s to low 80s Fahrenheit, creating comfortable conditions for all-day exploration.
Fall months, from September through October, present a compelling alternative with cooler temperatures and golden prairie grasses swaying in the autumn light. Raptor migration peaks during this period, and the crisp air creates exceptional visibility for photography and wildlife observation. The absence of biting insects makes fall hiking particularly pleasant compared to the summer months. Summer brings intense heat, with afternoon temperatures frequently exceeding 95 degrees, while winter transforms the grassland into an austere landscape of frozen solitude where snow-covered prairie offers a haunting beauty found nowhere else in Colorado.