City of Rocks National Reserve

Trip ideas while visiting Pocatello in Idaho

City of Rocks National Reserve

City of Rocks National Reserve sits in the Basin and Range Province of southeast Idaho, approximately 45 miles south of Pocatello near the small community of Almo. The reserve encompasses over 14,000 acres of dramatic rock formations that rise abruptly from the surrounding sagebrush plains, creating one of the most distinctive landscapes in the American West. California Trail emigrants traveling westward in the mid-1800s first dubbed this place “the silent city,” describing the landscape as a “city of tall spires” and “steeple rocks” that seemed to rise like buildings in an urban skyline.

The signature granite spires that give City of Rocks its name reach heights of up to 600 feet, formed through millions of years of erosion that stripped away softer surrounding rock while leaving behind these towering sentinels of light-gray granite. The quality of the rock makes it a world-renowned destination for rock climbing, with thousands of established routes ranging from beginner-friendly slabs to challenging crack climbs that test even experienced climbers. The formations are arranged in clusters scattered across the reserve, with the Reserve Trail and Circle Creek Trail providing the best vantage points for appreciating the scale and variety of the rock architecture.

The history of City of Rocks stretches back thousands of years, with the area serving as an important resource for Shoshone and Bannock peoples who hunted game and gathered plants in the surrounding valleys. The rock formations themselves served as landmarks and shelter sites, with evidence of indigenous use scattered throughout the reserve. The arrival of the Oregon Trail in the 1840s transformed the area into a waypoint for thousands of westward migrants. California Trail emigrants left behind some of the most tangible evidence of their passage in the form of inscribed names and dates carved into the granite boulders. The Register Rock and the California Trail Rock Art represent some of the best-preserved examples of this pioneer graffiti, offering a direct connection to the hopes and struggles of those who passed through on their way to a new life in the West.

The Humboldt Trail also passed through the City of Rocks area, diverging from the main Oregon Trail to route travelers toward the Great Basin and ultimately California. The reserve contains segments of both historic trails, marked by depressions in the earth where thousands of wagon wheels wore away the vegetation over decades of use. These inscriptions, some dating to the 1850s and 1860s, document the passage of an estimated 350,000 emigrants through this specific corridor during the height of westward migration.

Rock climbing stands as the primary draw for most visitors to City of Lines, with over 1,000 established climbing routes catering to all skill levels. The granite offers exceptional friction for smearing and edge work, while the numerous cracks provide classic hand-jam and finger-crack opportunities that climbers travel from around the world to experience. The Beckner, Holding, and Window Rock areas offer some of the most popular routes, though the reserve contains dozens of distinct climbing zones scattered across its 14,000 acres. Technical climbing permits are not required for day visits, though overnight stays in the backcountry require permits available at the trailhead.

Hiking through City of Rocks reveals the scale and variety of the formations from ground level, a perspective that complements the climbing experience. The Reserve Trail is a 2-mile loop that winds through the heart of the formations, offering views of the most iconic spires and providing context for understanding how erosion shaped this landscape. The Circle Creek Trail extends 5 miles through more remote sections of the reserve, crossing through piñon-juniper woodland and offering opportunities to see wildlife including mule deer, coyotes, and a variety of raptors soaring on thermals above the rocks. The “Silent City” spires represent the heart of what makes City of Rocks so visually striking and worthy of protection. The light-gray granite catches the morning and evening light differently, creating constantly shifting patterns of shadow and illumination across the vertical faces.

Camping within the reserve allows visitors to extend their stay and experience the landscape at different times of day. The ALmo Creek Campground provides developed campsites with vault toilets and fire rings, situated along a seasonal stream surrounded by sagebrush. Backcountry camping is permitted throughout most of the reserve, though visitors must obtain free permits and follow Leave No Trace principles to minimize impacts on the fragile desert environment. The tallest formations reach 600 feet, with names like “The Window,” “The Igloo,” and “Eagle Rock” reflecting the imaginative comparisons early visitors drew as they approached across the flat surrounding plains.

Photography draws visitors throughout the year, with each season offering distinct opportunities. The California Trail inscriptions provide a tangible connection to the human history of westward expansion. Register Rock bears the carved names of dozens of emigrant families, livestock brands, and dates spanning from 1849 through the 1870s. These carvings offer a rare opportunity to see actual pioneer-era handwriting from individuals who risked everything to travel the overland trails. The Basin and Range landscape surrounding the rock formations offers its own beauty, with vast expanses of sagebrush steppe stretching to distant mountains. The contrast between the vertical drama of the granite spires and the horizontal sweep of the desert plain creates a visual tension that photographers and artists have long found compelling.

Spring brings mild temperatures and occasional wildflower blooms to the reserve, with daytime highs typically ranging from the 60s to 70s. Spring wildflowers including desert paintbrush, sego lilies, and phlox add color to the rocky landscape. Summer offers the longest days and most consistent weather, though daytime temperatures frequently exceed 90 degrees. Early morning starts are essential for comfortable summer visits, with many climbers preferring to be on route by 6 AM to maximize the cool morning hours. Fall represents the most popular visiting season at City of Rocks, with temperatures moderating into the 60s and 70s during the day. The surrounding sagebrush steppe takes on golden hues as the season progresses, complementing the gray granite and pale blue skies. Winter sees very few visitors, creating opportunities for solitude that are impossible during the busy summer season, with daytime highs in the 40s and 50s during sunny periods.