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Elevation: 7,020 ft
GPS: 40.0035, -105.3964
Google Map · Climbing Area Map
Page Views: 109,427 total · 387/month
Shared By: Kreighton Bieger on Dec 31, 2000 · Updates
Admins: Leo Paik, John McNamee, Frances Fierst, Monty, Monomaniac, Tyler KC
Warning Access Issue: Seasonal Closures 2024 - Bitty Buttress, Eagle Rock, Blob, Security Risk DetailsDrop down

Description Suggest change

The Upper Tier of 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 Bihedral.

There are quite 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".

This area gets good sun and is sometimes sheltered from the wind, which can make it a great place to climb on windless, warmer, winter days.

With a number of new, moderate, mostly bolted routes, this area is a popular place to bring groups and less-experienced climbers. Beware, there are still plenty of loose rocks above.

L->R:

A. Left-Handed Tool, 8, 1p, 70', bolts & gear.

B. Tool King, 8, 1p, 60', bolts & gear.

C. A Fly in the Ointment, 10-, 1p, 60', bolts & gear.

D. Edge of Reality, 12- R, 1p, 60', bolts.

E. Case of the Fags, 11+, 1p, 70', gear.

F. Acid Crack, 10, 1p, 60', gear.

G1. It's Time For Change, 8, 1p, 95', bolts & gear.

G2. Night Moves, 7, 1p, 60', bolts & gear.

above G2. Daydreaming, 10, 1p, 40', gear.

above G2. Oh Boy, 10+, 1p, 80', gear.

G3. Diamonds and Rust, 8+, 1p, 80', bolts.

H1. Fat Tuesday, 10+, 1p, 90', gear & bolts.

H2. Heterohedral, 9- PG-13, 2p, 240', gear.

H3. Hesitantly Decisive, 9- PG-13, 1p, 100', gear.

I. Blood Diamond, 11+, 1p, 80', gear & bolts.

J. High Hard One, 9, 1p, 80', bolts.

K. Backdoor Slider, 9, 1p 90', bolts.

L. Group Therapy, 8-, 1p, 100', bolts.

ML. Dan's Line, 8-, 1p, 100', bolts.

above M. Puff Daddy, 10-, 1p, 65', bolts.

N. Trick or Treat, 8-, 1p, 100', bolts & gear.

O. Sun Spot, 7, 1p, 100', gear & bolts.

P. Hold The Line, 9, 1p, 100', bolts & optional gear.

Q. Rhodian, Naturally, 9- R, 1p, 100', gear.

R. Rhodian Shores, 10, 1p, 80', bolts.

S. Bihedral, 8+, 2p, 240', gear.

above S. Crack Variation, 9 R, 2p, gear.

T. AHR, 11c/d, 1p, 70', bolts.

U. Dihedral Variation, 9+, 1p, 100', bolts & gear.

V. Bihedral Arete, 10-, 2p, 180', bolts & gear.

W. Where's Ray?, 8+, 1p, 60', bolts.

X. Flags Of Our Fathers, 10-, 3p, 200', bolts & gear.

above X. Sands of Iwo Jima, 11+, 50', bolts.

above X. Thumb Tack, 11+, a final pitch, 1p, gear.

above X. Pariah, 12, 1p, 80', 8 bolts.

Y. Just Putin Around, 9 PG-13, 4p, gear.

Z. Acid Rock, 6-8+ PG-13, 3p, gear.

To the right:

AA. Flesh Eating Flies, 11-, 1p, 60', bolts.

Getting There Suggest change

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 big pine tree next to the rock. Walk right behind the tree and go left around a rock rib. Climb up the rock, with one short 3rd-class section, to a nice ledge at the bottom of the big dihedral. See
Approach to routes on the upper tier of the Bihedral. Follow the approach trail up the hill until it cuts right toward the rock at a flat area. Spot a cairn by a big pine tree close to the rock. Head right, past the tree and around a rock rib. Climb the rock, mostly easy with a short 3rd-class section, up to the upper tier. for the easiest approach.

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.

38 Total Climbs

Route Finder - Best Climbs for YOU!

Location: The Bihedral (Upper Tier) Change
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Classic Climbing Routes at The Bihedral (Upper Tier)

Mountain Project's determination of the classic, most popular, highest rated climbing routes in this area.
5.7 5a 15 V+ 13 MVS 4b
 72
Sun Spot
Trad
5.8 5b 16 VI- 15 HVS 4c
 194
Dan's Line
Sport
5.8 5b 16 VI- 15 HVS 4c
 111
Trick or Treat
Trad, Sport
5.8 5b 16 VI- 15 HVS 4c
 161
Group Therapy
Sport
5.8 5b 16 VI- 15 HVS 4c
 91
It's Time For Change
Trad, Sport
5.8+ 5b 16 VI- 15 HVS 4c PG13
 109
Bihedral
Trad 2 pitches
5.9 5c 17 VI 17 HVS 5a
 251
Hold The Line
Sport
5.10a 6a 18 VI+ 18 E1 5a
 258
Bihedral Arete
Trad, Sport 2 pitches
5.10a 6a 18 VI+ 18 E1 5a
 81
Flags of Our Fathers
Trad, Sport 3 pitches
5.10a 6a 18 VI+ 18 E1 5a
 116
Puff Daddy
Sport
5.10- 6a 18 VI+ 18 E1 5a
 31
Daydreaming
Trad
5.10b 6a+ 19 VII- 19 E2 5b
 296
Rhodian Shores
Sport
5.11c/d 7a 24 VIII 25 E4 6a
 13
AHR
Sport
5.11d 7a 24 VIII 25 E5 6a
 8
Thumb Tack
Trad
5.11d 7a 24 VIII 25 E5 6a
 32
Sands of Iwo Jima
Sport
Route Name Location Star Rating Difficulty Date
Sun Spot
 72
5.7 5a 15 V+ 13 MVS 4b Trad
Dan's Line
 194
5.8 5b 16 VI- 15 HVS 4c Sport
Trick or Treat
 111
5.8 5b 16 VI- 15 HVS 4c Trad, Sport
Group Therapy
 161
5.8 5b 16 VI- 15 HVS 4c Sport
It's Time For Change
 91
5.8 5b 16 VI- 15 HVS 4c Trad, Sport
Bihedral
 109
5.8+ 5b 16 VI- 15 HVS 4c PG13 Trad 2 pitches
Hold The Line
 251
5.9 5c 17 VI 17 HVS 5a Sport
Bihedral Arete
 258
5.10a 6a 18 VI+ 18 E1 5a Trad, Sport 2 pitches
Flags of Our Fathers
 81
5.10a 6a 18 VI+ 18 E1 5a Trad, Sport 3 pitches
Puff Daddy
 116
5.10a 6a 18 VI+ 18 E1 5a Sport
Daydreaming
 31
5.10- 6a 18 VI+ 18 E1 5a Trad
Rhodian Shores
 296
5.10b 6a+ 19 VII- 19 E2 5b Sport
AHR
 13
5.11c/d 7a 24 VIII 25 E4 6a Sport
Thumb Tack
 8
5.11d 7a 24 VIII 25 E5 6a Trad
Sands of Iwo Jima
 32
5.11d 7a 24 VIII 25 E5 6a Sport
More Classic Climbs in The Bihedral (Upper Tier) »

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