All Locations > Colorado > Boulder > Flatirons > South

Unknown Rock Rock Climbing

Climbing Area Map

Routes in Unknown Rock

L › R R › L A › Z

	Chosspile Chimney T 5.3 3+ 10 III 9 VD 3a R
	East Face Right T 5.4 4a 12 IV 10 VD 3c PG13
Unsorted Routes:

Order Wrong? Sort Routes

Explore this area in 3D

Use onX Backcountry to explore the terrain in 3D, view recent satellite imagery, and more. Now available in onX Backcountry Mobile apps! For more information see this post.

Elevation:	7,122 ft
GPS:	39.9676, -105.2948 Google Map · Climbing Area Map
Page Views:	2,371 total · 15/month
Shared By:	neil chelton on May 20, 2011
Admins:	Leo Paik, John McNamee, Frances Fierst, Monty, Monomaniac, Tyler KC Page Updates (admin only)

See Weather Forecast

Access Issue: 2024 Crag Closures & Temporary Trail and Raptor Closures Details

The usual crags are closed for climbing for raptor nesting:

See: bouldercolorado.gov/service….

Click here for the trail closures. Some are M-F, some are 24/7. These impact the Bear Canyon/Fern Canyon regions primarily:

flatironsclimbing.org/tempo…

Click here bouldercolorado.gov/service… for the latest in raptor closures.

Access Issue: Off-trail permit required Details

You can obtain a free off-trail permit here: bouldercolorado.gov/index.p…

The formation is in Area 9 of the Western Mountain Parks.

Description

This large, obscure formation is approximately 1/2 mile west of Seal Rock and 3/4 mile south of the Sacred Cliffs. It is not listed in the current Flatirons guidebook. The approach is difficult, and the rock quality is extremely poor. But if you have a youthful spirit of adventure, want to explore something unusual, and are interested in climbing an expanding chimney, then it's definitely worth a visit.

Getting There

To get there: follow the Mesa trail to the junction with Bear Canyon. Head West into Bear Canyon for about 1/2 mile. You will have walked past Overhang Rock, Poot Ridge, and the Sanctuary formations. Unknown Rock is the next large formation on the south side of Bear Canyon. An off-trail permit and bushwhacking are required to reach the base.