Situated on the backside of Cyclops Rock, the Manx Boulders Circuit offers an engaging and approachable bouldering experience amid Joshua Tree’s rugged beauty. This compact cluster of problems sprawls across a sandy, open west-facing area, where climbers can move fluidly from one problem to the next without losing momentum. The terrain here is inviting, with generally flat landings that allow for confident attempts without sacrificing safety. The Manx Boulders themselves deliver around fifteen problems ranging from V-easy to V4, making the area well-suited to a broad spectrum of skill levels, from casual climbers refining their technique to those looking to hone power moves in a relaxed setting.

Just a short walk away lies Pigpen, a standout classic centered on a roof crack that challenges climbers with its V4 rating and a range of high-difficulty variations climbing up to V11. It demands precision and strength—the kind of problem that draws boulderers hungry for a test beyond the basics. Access here is straightforward: park where you would for Cyclops Rock and follow the trail skirting its southwest face. After a brief stroll, you’ll find the Manx Boulders in a sunlit sandy patch, with Pigpen about 80 meters closer to the campground, making it easy to include both in a climbing session.

The elevation here is 4,196 feet, providing a dry desert setting typical of Joshua Tree National Park’s iconic landscape. Weather plays a crucial role, and climbers will find the best conditions in the cooler seasons—spring and fall—when the desert heat is tempered, and the skies usually cooperate. Summer climbs require careful timing to avoid the oppressive sun, while winter offers crisp air but demands layers.

Climbing regulations in Joshua Tree are firm—vegetation must never be used as anchors, and only neutral or rock-colored bolt hangers are permitted on fixed gear. These rules protect the fragile desert ecosystem and ensure the rock sustains future generations of climbers. Check the park’s official compendium before visiting to stay updated on seasonal closures, particularly those protecting nesting raptors.

Classic routes like The Womb, Thingamajig, Scuttlebutt, and The Boxer Problem all feature prominently in this circuit, providing steady progression through V-easy to V2 problems. For those seeking more challenge, Pigpen’s extended variations offer serious roof climbing that demands attention and respect. Problems like Yogi Variation (aka Yogi Lite), rated V8, give advanced boulderers options to push their limits.

This area offers more than just climbing—the sandy ground beneath your feet and the expansive western exposure invite rest breaks filled with wide views of the desert expanse. Being compact, the circuit feels social and lively without becoming crowded, a perfect balance that supports solid session flow and good company.

Gear-wise, this is a bouldering destination, so bring multiple pads to protect the relatively flat but sandy landings. The rock is typical Joshua Tree texture — solid and rough, helping with friction but demanding skin care for longer sessions.

In all, the Manx Boulders Circuit is a welcoming playground with enough variety to captivate mixed-ability groups. Whether you want to revisit familiar classics or test your mettle on Pigpen’s roof, this area's combination of accessible problems, clear approaches, and the timeless desert backdrop make it a must-visit bouldering objective in California’s Joshua Tree National Park.