Warn 'er stands quietly to the left of the better-known Tweety in Clear Creek Canyon, inviting climbers with a deceptively understated crack system that demands respect and careful movement. The route’s entrance starts down and left at a prominent crack that leads into a cozy nook, setting the tone for a climb that requires more finesse than brute strength. From here, climbers place protection and sling long draws to negotiate a slightly uneasy traverse right at the crux—an exposed section where balance and precise footwork make all the difference.

Beyond this crossing, a series of intermittently challenging jams and face holds guide you upward through slick, sometimes awkward rock features. The crack widens toward the top, offering a welcome relief and a chance to breathe after the demanding moves below. Though the route stretches only about 60 feet, the technical demands paired with the subtle variations in the crack’s width keep the climb engaging. Off to the left at the top, a tree with two 48-inch slings provides a directional anchor, smoothing the way for the second climber.

Protection here is straightforward but requires attentiveness; a rack of nuts up to a #3 Camalot is sufficient, though the smaller #1 Camalot placements are frequent and most reliable. Wire placements can be tricky due to the slick nature of the rock grooves, so test each carefully. The rock is solid, but its slick texture tests your gear placements as much as your technique.

Approach access from East Colfax is short and manageable, making Warn 'er a reasonable objective for a half-day outing. The trail winds through open scrub and scattered pines, offering crisp mountain air and clear views of the canyon’s rugged contours. The climb’s north-northeast facing wall benefits from morning sun, but afternoon shade cools the granite—a welcome contrast especially in summer heat.

For climbers seeking a route that rewards careful reading of the rock and strategic gear placements, Warn 'er is a quietly satisfying challenge. It's less crowded than neighboring routes, providing a sense of solitude and focus for those ready to test themselves on a climb that demands calm and precision rather than raw power.