BETA PHOTO: Selected routes on the upper tier of the Bihedral....
Description
The Bihedral is typical Boulder Canyon granite climbing. Generally less than vertical on bullet-hard grey granite. Good friction with a high concentration of slopers, both large and small, and positive incut edges. The crag itself is identified by a huge, left-facing dihedral and sits on the north side of the canyon. The dihedral is split by a prow about 1/2 way up. The bolted face route Rhodian Shores finishes just below this prow, and the Bihedral Route belays just above the prow.
Drive 7 miles up the canyon (zero at the bridge a la Rossiter), park just before the Riviera at a pullout on the left (same pullout as for Happy Hour Crag), or continue 0.2 miles to shady parking on the left side, just past a guard rail, identified by a west-facing "No Camping" sign nailed to a tree. The huge left-facing dihedral of the Bihedral is obvious above you.
Cross the road, walk down a bit and find a path that zig-zags up the hill, generally heading right (east). When the trail nears the rock on the right, spot a cairn under a big pine tree next to the rock. Walk right past the tree and go around a rock rib. Climb up the rock, with one short 4th-class section, to a nice ledge at the bottom of the big dihedral. There are a few good routes here, but the most well known is the 2-pitch Bihedral route, which Rossiter so obtusely refers to as "something of a classic".
To return, reverse the above approach, or else walk 50' left (west) on a path just below the Bihedral Route, to a 2-bolt rappel anchor. Rap 95' down a gully to the top of the approach trail.
This route is one of two routes up the striking headwall that caps the Bihedral.This climb can be seen easily from the road on the top 1/4 of the Bihedral. It starts in a overhanging handcrack for a few meters, gains a small square pod/cave, then exits the feature on the right hand side in sustained tight finger-locks and sidepulls, going up to a tree at the summit.P1: Approach via the climb Rhodian Shores, Crack Variation, or Bihedral Arete. Af...[more]
By Ron Olsen Administrator From: Boulder, CO Mar 15, 2007
On 3/14/07, Mike Amato and I installed a new 2-bolt rappel anchor about 50' left of the Bihedral Route/Rhodian Shores/Hold The Line area. This provides a descent back to hiking terrain without having to do the 4th-class downclimb.
From the ledge below the start of these climbs, walk climber's left (west) about 50' to the end of the ledge and a 2-bolt rappel anchor. Rap 95' down a gully to the top of the approach trail. A 60m rope works fine. See Photo.
The Bihedral
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