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Routes in The Bihedral (Upper Tier)

A Fly in the Ointment T,S 5.10b 6a+ 19 VII- 19 E2 5b
AHR S 5.11c/d 7a 24 VIII 25 E4 6a
Acid Crack T 5.10b 6a+ 19 VII- 19 E2 5b
Acid Rock T 5.8+ 5b 16 VI- 15 HVS 4c PG13
Bihedral T 5.8+ 5b 16 VI- 15 HVS 4c PG13
Bihedral Arete T,S 5.10a 6a 18 VI+ 18 E1 5a
Blood Diamond S 5.11c 6c+ 24 VIII- 24 E4 6a
Case of the Fags T 5.11+ 7a 24 VIII 24 E4 6a
Crack Variation T 5.9 5c 17 VI 17 HVS 5a R
Dan's Line S 5.8 5b 16 VI- 15 HVS 4c
Daydreaming T 5.10- 6a 18 VI+ 18 E1 5a
Diamonds and Rust S 5.8+ 5b 16 VI- 15 HVS 4c
Dihedral Variation T,S 5.10a 6a 18 VI+ 18 E1 5a
Edge of Reality S 5.12a/b 7b 26 VIII+ 26 E5 6a R
Fat Tuesday T,S 5.10+ 6b+ 21 VII+ 20 E3 5b
Flags of Our Fathers T,S 5.10a 6a 18 VI+ 18 E1 5a
Flesh Eating Flies S 5.11a 6c 22 VII+ 22 E3 5c
Group Therapy S 5.8 5b 16 VI- 15 HVS 4c
Hesitantly Decisive T 5.9- 5c 17 VI 16 HVS 4c PG13
Heterohedral T 5.9 5c 17 VI 17 HVS 5a PG13
High Hard One S 5.9+ 5c 17 VI 17 E1 5a
Hold The Line S 5.9 5c 17 VI 17 HVS 5a
It's Time For Change T,S 5.8 5b 16 VI- 15 HVS 4c
Just Putin Around T 5.9 5c 17 VI 17 HVS 5a PG13
Left-Handed Tool T,S 5.8 5b 16 VI- 15 HVS 4c
Night Moves T,S 5.7 5a 15 V+ 13 MVS 4b
Oh Boy T,S 5.10c 6b 20 VII 20 E2 5b
Pariah S 5.12b 7b 26 VIII+ 26 E5 6b
Puff Daddy S 5.10a 6a 18 VI+ 18 E1 5a
Rhodian Shores S 5.10b 6a+ 19 VII- 19 E2 5b
Rhodian, Naturally T,TR 5.9- 5c 17 VI 16 HVS 4c R
Sands of Iwo Jima S 5.11d 7a 24 VIII 25 E5 6a
Sun Spot T,S 5.7 5a 15 V+ 13 MVS 4b
Thumb Tack T 5.11d 7a 24 VIII 25 E5 6a
Tool King T,S 5.8 5b 16 VI- 15 HVS 4c
Trick or Treat T,S 5.8 5b 16 VI- 15 HVS 4c
Where's Ray? S 5.8 5b 16 VI- 15 HVS 4c
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Type: Trad, 270 ft, 3 pitches
FA: Tobias and Cunningham (1971) or Tobias and Pierce (1970)
Page Views: 434 total · 7/month
Shared By: George Bracksieck on Dec 29, 2013
Admins: Leo Paik, John McNamee, Frances Fierst, Monty, Monomaniac

You & This Route

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Access Issue: Seasonal Closure - 2018 Update Details


I have found descriptions of this route in the following guidebooks: Ament and Erickson's "5.10" (1972); Ament and McCarty's "High over Boulder" (1976 and 1985); Rossiter's "Boulder Climbs North" (1988); and Rossiter's "Boulder Canyon" (1999). In the first of these guides, the name of Tobias's partner is different from the one listed in the subsequent three. Each of these guides contains a different description of the route; BCN has a vague topo that shows the beginning of the route (in a position that is different from at least one of the written descriptions); BCN and BC have good photos of the Bihedral area (without showing the route's location). Rossiter's photos show many possibilities. Because guidebook writers often just paraphrase previously published descriptions, while attempting to disguise outright plagiarism, contradictory and/or vague information is often the result.

Whew — lots of dissection of unimportant trivia — good thing these aren't important trivia.


It is between Pariah and Flesh Eating Flies.




George Bracksieck  
Yesterday, Leo Paik and I embarked upon a mini-adventure, with the noble intent of finding where Acid Rock really goes. None of it seemed familiar to me, in spite of having climbed what I THOUGHT was Acid Rock in 1975. Turns out what I thought was Acid Rock in 1975 was likely Sun Spot, which happens to be the only route that I haven't SINCE climbed on that whole sector to the left of the Bihedral route.

Back to yesterday: From the base of the Bihedral route, I traversed about 120 feet to the right, placing occasional gear, along the top of a wide slab (which old-guidebook writers called a ramp). I passed what is probably the best, most direct start, up a tongue of gray rock, which would lead up toward a big leftish-facing 90-degree dihedral. Instead, I continued about 20 feet farther right and up, to where I found better placements for a belay anchor, below a bulge and at the top of the wide slab.

Pitch 1: Leo led up and right about 10 feet, placed a cam and moved left, over the bulge (5.7+), He traversed unprotected slab about 20 feet to the bottom of the grainy, 90-degree dihedral, where he placed cam and extended it. He continued to the top of the steepening dihedral, past loose blocks in the funky crack and belayed on a ledge, with lots of loose rock (~90 feet, 5.8+). When I seconded, I removed the first cam and faced a cruxy move with a potentially deadly long swing down into the slab or the bulge next to it. I contemplated climbing back down to the belay, but that wouldn't be easy, and there was also big swing potential. So use double-rope technique, or start at the gray tongue, directly beneath the dihedral.

Pitch 2: I contemplated escaping to the right along this ledge, because above loomed many loose features and no obvious solid pro. After fiddling in a ball nut and tiny cams, I moved up and placed a decent 0.5 C4. Better rock and pro led to a difficult, poorly protected exit past loose blocks, onto a ledge by a seven-foot Douglas fir (perhaps the "pine" referred to in the guidebooks; ~70 feet, 5.8+).

Pitch 3: Leo moved left on the ledge, then angled up and right in a right-facing dihedral-ramp system, then scrambled to the top (~110 feet, 5.7).

Old guidebooks rated this route 5.6. Later guidebook writers perpetuated this rating, probably because they paraphrased old publications without doing any field research. Feb 15, 2014
George Bracksieck  
This route lies above the right side of the Riviera. Any rock knocked off could crash down onto climbers and spectators, kids and dogs, who are oblivious to what lies above. Better avoid it on weekends — and warm weekdays. Mar 11, 2014

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