REI Community
Mammoth Rock
Routes Sorted
L to R R to L Alpha
Boromir S 
Bridge of Sighs S 
Peregrine/Raptors nest T 
Proboscis S 


YDS: 5.11a French: 6c Ewbanks: 22 UIAA: VII+ ZA: 22 British: E3 5c

Type:  Sport, 1 pitch, 90'
Original:  YDS: 5.10d French: 6b+ Ewbanks: 21 UIAA: VII+ ZA: 21 British: E3 5b [details]
FA: Sean Burke and Todd Worsfold
New Route: Yes
Season: August 1 through January 31
Page Views: 1,197
Submitted By: Todd Worsfold on Nov 6, 2015

You & This Route  |  Other Opinions (12)
Your todo list:
Your stars:
Your rating: -none- [change]
Your ticklist: [add new tick]
Your opinion of this PAGE:    [1 person likes this page.]
Ben Hockman on Boromir.

Falcon Nesting Closure at Castle Rock MORE INFO >>>


"Boromir" is 30' right of "Bridge of Sighs" and ascends a steep face with a thin diagonal crack. Technical face climbing with three cruxes, characterized by thin, precise foot-work yet also by dynamic, technical movement in spots.


West face of Mammoth Rock. As you approach the base of Mammoth, "Proboscis" is the first major line, which starts on the right edge of a small cave. Fifty feet further up-hill is "Bridge of Sighs", which is characterized by two "blobs" in the first 25 feet. Then comes "Boromir", described above.


8 bolts

Photos of Boromir Slideshow Add Photo
Rock Climbing Photo: Sean Burke on the FA of "Boromir"
Sean Burke on the FA of "Boromir"

Comments on Boromir Add Comment
Show which comments
By aaron hope
From: Walnut Creek, CA
Dec 14, 2015
rating: 5.11- 6c 22 VIII+ 22 E3 5c

Really fun climb. One of the cleaner climbs in the area (no loose stuff). Moving past the lieback rail at the third bolt was wild!
By Jacob Glazebnik
From: Oakland, CA
Dec 27, 2016
rating: 5.11- 6c 22 VIII+ 22 E3 5c

Stellar climb. Delicate face climbing with a few dynamic moves thrown in. Thank you Shawn!

Mountain Project

The Definitive Climbing Resource

MTB Project

Next Generation MTB Trail Maps

Powder Project

Backcountry Ski Maps & Secret Stashes
FREE Stickers · Gyms · RSS · School of Rock · Contact · About