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Mammoth Rock

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L to R R to L Alpha
Boromir S 
Bridge of Sighs S 
Peregrine/Raptors nest T 
Proboscis S 

Mammoth Rock  Rock Climbing 

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Location: 37.88029, -121.98765 View Map  Incorrect?
Page Views: 3,172
Administrators: Aron Quiter, M. Morley, Adam Stackhouse, Salamanizer suchoski, Justin Johnsen, Kristine Hoffman (sitewide)
Submitted By: Stas Yurkevich on Sep 23, 2015

67° | 52°

69° | 50°

72° | 47°

74° | 49°

79° | 50°

79° | 52°
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Falcon Nesting Closure at Castle Rock MORE INFO >>>


The biggest rock at the bottom of the canyon. This rock has high foot traffic from both day hikers and stoners alike so don't leave stuff laying around on top.

Getting There 

First big rock formation on trail to Miller Pillar and Flintstone.

Climbing Season

Weather station 2.6 miles from here

4 Total Climbing Routes

['4 Stars',2],['3 Stars',1],['2 Stars',1],['1 Star',0],['Bomb',0]

Classic Climbing Routes in Mammoth Rock

Mountain Project's determination of the classic, most popular, highest rated climbing routes for Mammoth Rock :
Bridge of Sighs   5.10c 6b 20 VII 20 E2 5b R     Sport, 2 pitches   
Proboscis   5.10c 6b 20 VII 20 E2 5b PG13     Sport, 2 pitches   
Boromir   5.11a 6c 22 VII+ 22 E3 5c     Sport, 1 pitch, 90'   
Browse More Rock Climbing Classics in Mammoth Rock

Featured Route For Mammoth Rock
Rock Climbing Photo: Getting under first bolt

Proboscis 5.10c 6b 20 VII 20 E2 5b PG13  California : San Francisco Bay Area : ... : Mammoth Rock
Bolted route right from Peregrine. Two bolt-protected slightly run out pitches in a great setting with fragile holds. Bolts locations make for some difficult and spicy clips. Belay on the top (of second pitch) from a big hole and walk off on descend. First pitch:Move to the left from second bolt is super cool- a lot of air under and great holds.60 meters rope is enough for top-roping the first (most fun) pitch. Could be done in one 58-meters pitch with 12+ quick-draws.Second pitch:Rock is fragi...[more]   Browse More Classics in California

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