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The Bihedral Area
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Bihedral (Upper Tier), The 
Castaway Block 
Left Side, The 
Lower Tier, The 
Riviera, The 


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The Bihedral Area


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Submitted By: Kreighton Bieger on Sep 13, 2006
Administrators: Ben Mottinger, Leo Paik, John McNamee, Frances Fierst, Monomaniac
Elevation: 6,850 feet
Latitude: 40.0034  Longitude: -105.3969 
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Bihedral Rock Area.


Description 

The Bihedral Area includes at least 4 sub-areas: The Bihedral, The Riviera, the Left Side and The Lower Tier. For organizational purposes, this is subdivided here. This photo may help.

The Bihedral Area rock 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 Bihedral 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 Riviera is located down & right of The Bihedral. The Left Side is located to the left of The Bihedral. The Lower Tier is located below the The Bihedral (Upper Tier) upper tier.


Getting There 

Drive 7 miles up the canyon (zero at the bridge a la Rossiter), park just past the Riviera at a pullout on the right, or there is shady parking on the left side 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 pick a line up a boulder field and scoot left around a short broken buttress. 4th class it up past some trees on your right and gain 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 Arete, which Rossiter so obtusely refers to as "something of a classic".


The Classics

Mountain Project's determination of some of the classic, most popular, highest rated routes for The Bihedral Area:
Sun Spot   5.7     Trad, Sport, 1 pitch, 100 feet   The Bihedral (Upper Tier)
Topless Etiquette   5.8     Sport, 1 pitch, 85 feet   The Riviera
It's Time For Change   5.8     Trad, Sport, 1 pitch, 90 feet   The Bihedral (Upper Tier)
Bihedral   5.8+ PG13     Trad, 2 pitches   The Bihedral (Upper Tier)
Diamonds and Rust   5.9     Sport, 1 pitch, 80 feet   The Bihedral (Upper Tier)
Hold The Line   5.9     Sport, 1 pitch, 100 feet   The Bihedral (Upper Tier)
Flags of Our Fathers   5.9+     Trad, Sport, 3 pitches, 200 feet   The Bihedral (Upper Tier)
Devin's Dihedral   5.9+ R     Trad, Sport, TR, 1 pitch, 60 feet   The Riviera
Puff Daddy   5.10a     Sport, 1 pitch, 65 feet   The Bihedral (Upper Tier)
Bihedral Arete   5.10a     Trad, Sport, 2 pitches, 180 feet   The Bihedral (Upper Tier)
Hound's Tooth   5.10b     Sport, 1 pitch, 80 feet   The Lower Tier
Le Nouveau Riche   5.10b PG13     Trad, Sport, TR, 1 pitch, 85 feet   The Riviera
Rhodian Shores   5.10b     Sport, 1 pitch, 100 feet   The Bihedral (Upper Tier)
Sea Breeze   5.11     Sport, 1 pitch, 60 feet   The Riviera
Sands of Iwo Jima   5.11c/d     Sport, 1 pitch, 50 feet   The Bihedral (Upper Tier)
Browse More Classics in The Bihedral Area

Featured Route For The Bihedral Area
Tony Bubb arrives at the steep section of 'Thumb Tack (5.11+)' at the Bihedral and wiggles in some gear. Don't let the angle of the camera fool you, look at the angle of the rope! Photo by Alan Doak, 2004.

Thumb Tack 5.11d  CO : Boulder Canyon : ... : The Bihedral (Upper Tier)
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]   Browse More Classics in CO


Comments on The Bihedral Area Add Comment
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By E Johnson
From: Boulder, CO
Apr 3, 2007

Ticks have arrived. Despite a tick check of clothing and ankles, a baby tick made it home with me and was discovered inside my shirt (4 layers deep). Be thorough in your tick checks!