Rising at an elevation of 9,308 feet within 10 Mile Canyon, Colorado, Jurassic Bloc presents a raw, compelling playground for boulderers seeking fresh challenges and quality movement. This compact boulder offers a handful of standout problems that all start with a strong, powerful move—demanding commitment and precision right from the first hold. Climbers can also opt for a stand start on the flat jug, which eases the initial difficulty by approximately one grade, making some problems accessible and fun even for those still building strength and technique. For those drawn to creative sequences, traversing routes along the boulder's right side open up opportunities to link moves laterally, injecting variety into the session.

The area has a certain untamed allure given its relatively recent development. The rock still carries the marks of its untouched status with some needs for cleaning left to the community’s care. Notably, the “tongue” flake is a defining but delicate feature—sharp to the touch and potentially unstable, requiring climbers to tread mindfully to preserve the rock’s integrity and their own safety. This shallow flake might eventually detach, so respect for the formation is paramount.

Jurassic Bloc benefits from generous morning shade stretching into the early afternoon, providing climbers a refuge from the sun and the often intense Colorado altitude. This timing allows sessions to be planned comfortably within warmer months or on bright but cool days, enhancing the overall experience.

Approaching Jurassic Bloc is straightforward yet scenic. From the Mount Royal parking lot, climbers follow the Tenmile Recreation path westward along the canyon. Approximately half a mile in, a small cairn on the left signals the turnoff. From here, the trail ascends and winds right through a talus field guided by additional cairns, eventually veering toward the boulder itself. The entire approach takes about ten minutes, making it an accessible warm-up that transitions quickly from trail to climbing.

Classic problems here speak to a range of abilities and offer benchmarks for bouldering progression. Noteworthy climbs include '280 Portions of Brain Grain' (V7), 'Chicxulub Impactor' (V6), 'Descendants of Dinosaurs' (V2), 'Hold On To Your Butts' (V5), and 'Sue' (V6). Each route provides a unique test of power, technique, and movement flow. While the grade range leans toward the intermediate to advanced spectrum, the area’s setting and problem variety hold appeal for dedicated boulderers looking to push limits in a stunning alpine canyon.

Jurassic Bloc sits within the broader context of the 10 Mile Bouldering area, a well-regarded climbing destination known for its high-elevation access and quality rock. Climbers visiting this zone should bring at least two pads to negotiate the landing zones safely and be prepared for the firm, sharp texture of the rock. Given the delicate “tongue” flake and the need for community stewardship, brushing and cleaning should be conducted responsibly with minimal disruption.

Plan your visit for spring through fall when weather conditions are most stable, avoiding high precipitation days and winter cold at altitude. The morning shade invites early starts or mid-morning arrivals, while finishing climbs before late afternoon helps avoid warmer sun exposure. Descending is a simple walk off the boulder and along the talus, though attention to footing is important on loose rocks.

The Jurassic Bloc is a fresh gem in Colorado’s bouldering crown, a place where raw rock meets purposeful challenge. Whether you’re here for a power test, tactical traverses, or simply to soak in the rugged mountain air, this boulder delivers a pure climbing experience that blends nature’s toughness with climbers’ tenacity. Take care of the fragile features and leave the area as pristine as you found it, so this new classic can grow into a cherished destination for years to come.