Outdoor Picture of the Day: Devil’s Thumb, Boulder, Colorado

Each morning as the sun climbs above the Front Range, an unmistakable silhouette rises over Boulder’s skyline — Devil’s Thumb. This jagged rock formation, perched high above the city on the shoulder of Bear Peak, captures the raw spirit of Boulder’s outdoor life. Today’s Outdoor Picture of the Day shows the Thumb bathed in soft light, its rugged cliffs glowing against a backdrop of alpine pines and cobalt sky.

So what exactly is Devil’s Thumb? It’s a dramatic sandstone spire in the southern Flatirons, and one of the most iconic formations in Boulder County. The rock’s name comes from its shape — a crooked thumb reaching skyward — and its reputation among early climbers for being both mesmerizing and menacing. The west face features a steep overhang, and even the “easier” east side demands real skill. According to Mountain Project, Devil’s Thumb was once outfitted with a steel ladder to assist climbers; all that remains today is a single pole and a rappel anchor — a silent tribute to Boulder’s early mountaineering days.

How to Get There

The best way to approach Devil’s Thumb is via the Devil’s Thumb Bypass Trail starting from the Hessie Trailhead near Nederland. The drive from Boulder takes about 45 minutes: follow Boulder Canyon (Highway 119) toward Nederland, then take the road toward Eldora. The Hike Bike Travel guide offers detailed directions, noting that the route passes through dense forests before opening into meadows with breathtaking views of the Indian Peaks. During summer weekends, expect limited parking and optional shuttle service to the trailhead.

Fun Facts and Local Lore

• Locals sometimes joke that Devil’s Thumb is Boulder’s “upward-pointing landmark,” a nickname reflecting its distinctive shape and visibility across town.

• Legend has it that the Devil himself left his mark on the mountainside, creating the spire to remind mortals of his presence.

• The formation is considered a 5th-class climb, meaning ropes and experience are required for a summit attempt.

• Longtime residents say catching Devil’s Thumb at sunrise or sunset is a daily reward — a natural reminder of why Boulder’s wild beauty never fades.

Whether you’re a climber, photographer, or trail wanderer, Devil’s Thumb embodies the adventurous soul of Boulder. And if you’d like to explore more of Boulder’s most captivating outdoor locations, you’ll find plenty of local stories and photography over on this local site.

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