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Cornerstone Boulder

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Cornerstone Left to Right 
Cornerstone Lefthand 
Cornerstone Right to Left 
Cornerstone Righthand 

Cornerstone Boulder Rock Climbing 

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Location: 33.9826, -117.3929 View Map  Incorrect?
Page Views: 1,129
Administrators: C Miller, Euan Cameron, M. Morley, Adam Stackhouse, Salamanizer suchoski, Justin Johnsen, Vicki Schwantes, Kristine Hoffman (sitewide)
Submitted By: Euan Cameron on Jan 13, 2009
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Going for the lip on Cornerstone Lefthand.


This small boulder lies west from Borson's Wall next to the path on the inside of the bend.

It has some pleasant, although all too short problems, but its definitely worth stopping at.

Getting There 

Park at the San Andreas / Glenwood parking area. Head up the paved road passed the gate. Follow the road / path as it winds its way up the hill. The road heads North, then South and finally swings back North near the crest of the hill. Follow the road until you come to a small bridge. Drop down to the path below and follow this path East / North East. As the road swings left the boulder is on your left.

Climbing Season

For the Borson's Area area.

Weather station 3.3 miles from here

4 Total Climbing Routes

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

Featured Route For Cornerstone Boulder
Rock Climbing Photo: Traversing the lip on the Cornerstone Boulder.

Cornerstone Left to Right V-easy 3  California : Inland Empire : ... : Cornerstone Boulder
Start on the lip of the boulder as soon as the good rock begins, and traverse the lip rightwards, climbing down at the far end, to finish with hands on the good flake hold....[more]   Browse More Classics in California

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Rock Climbing Photo: Cornerstone Boulder Topo
BETA PHOTO: Cornerstone Boulder Topo

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By Toddw
Jul 18, 2012
I hadn't visited this area in decades until recently. The route I was taught was not to use the arete, only the small crimps on each face while smearing, then dyno to the top and mantle out. Good times for such a small piece of granite!

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