All Locations > Colorado > Ft Collins > Poudre Canyon > Greyrock

The Sentinel Rock Climbing

Climbing Area Map This is our best guess at this area's location.
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Routes in The Sentinel

Jamminy Crackit T 5.11d 7a 24 VIII 25 E5 6a

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GPS:	40.71507, -105.29228 Google Map · Climbing Area Map
Page Views:	2,527 total · 15/month
Shared By:	Brian Weinstein on Apr 25, 2012
Admins:	James Schroeder, Leo Paik, John McNamee, Frances Fierst, Monty, Monomaniac, Tyler KC Page Updates (admin only)

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Access Issue: 2025 Seasonal Raptor Closures - Triple Tier, Boston Peak, Grazing Allotment Crag Details

From the NFS (2/3/25): Seasonal restrictions to protect nesting birds of prey

FORT COLLINS, Colo. (Feb. 3, 2025) – To protect nesting birds of prey, the Roosevelt National Forest began implementing annual closures in several popular recreation areas within the Canyon Lakes and Boulder Ranger Districts on Feb 1, 2025.

On the Canyon Lakes Ranger District, the closure areas include Triple Tier, south of CO Highway 14; Boston Peak, north of CO Highway 14; Grazing Allotment Crag, northwest of Prairie Divide Road; and Mt. Olympus, southeast of US Highway 34. See the closure map for more details.

The Roosevelt National Forest works closely with partners like Colorado Parks and Wildlife, Boulder Climbing Community and the Northern Colorado Climbers Coalition to monitor nesting progress and inform climbers about the importance of giving raptors space to raise their young.

Federal and state laws prohibit disturbing any nesting bird of prey. Visitors can help protect wildlife by respecting all closures. Signs will be posted at key access points into the closed areas. Additional closure information is available online.

From the Canyon Lakes Ranger District Forest Service:

Fort Collins, Colo. (March 7, 2024) – to protect nesting birds of prey, the U.S. Forest Service is implementing annual area closures in several popular recreation areas throughout the Canyon Lakes Ranger District. The closures include Triple Tier, south of CO Highway 14; Boston Peak, north of CO Highway 14; Grazing Allotment Crag, northwest of Prairie Divide Road; and Mt. Olympus, southeast of US Highway 34. See the closure map for more details. Effective through July 31, 2024, the closures protect established raptor territories to ensure the birds remain undisturbed during sensitive breeding and nesting seasons.

The Canyon Lakes Ranger District partners with Colorado Parks & Wildlife and the Northern Colorado Climbers Coalition to monitor nesting progress and to inform climbers about the importance of giving raptors space to raise their young.

Federal and state laws prohibit disturbing any nesting bird of prey. Visitors can help protect wildlife by respecting all closures. Signs will be posted at key access points into the closed areas. Additional closure information is available online.

A map: fs.usda.gov/Internet/FSE_DO….

Additional information: fs.usda.gov/Internet/FSE_DO….

Description

This small chunk of stone is a secluded and rarely traveled wall that houses Jamminy Crackit, one of the finest crack lines in the canyon. The stone looks like it is straight out of Vedauwoo, though once on it, you'll see it holds the gneiss that the Poudre is known for.

Getting There

The Sentinel is due north and a little east of the summit of Greyrock. It is best found by descending from the first little pond along the summit trail (almost to the top of Greyrock). There is a highpoint clearly seen from the big pond on the summit looking north. Bushwhack to the West of that high point (you'll be descending to get there. It is a bit convoluted though there is a somewhat cairned trail. The most favorable approach is to climb one of the routes on Greyrock proper to the summit, then hike from there.