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Thumb Boulder

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Thumb Boulder Rock Climbing 

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Location: 32.9268, -117.1772 View Map  Incorrect?
Page Views: 831
Administrators: Marc Kajut, M.Morley, Adam Stackhouse, Salamanizer, Justin Johnsen, Kristine Hoffman (sitewide)
Submitted By: Raz on Dec 23, 2012

64° | 41°

65° | 39°

70° | 44°

71° | 45°

74° | 46°

73° | 46°
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BETA PHOTO: Two problems starting at the same holds

Current San Diego County Advisories MORE INFO >>>


The climbs on this boulder are near vertical. Further, it features some of the better rock quality at Rancho Penasquitos.

Getting There 

This boulder lies at the western section of the waterfalls, on the southern side of the river. When approaching the waterfalls from the main trail, head left, down the stairs, and across the river. The boulder sits to the right, with the climbs facing north.

Climbing Season

For the San Diego County area.

Weather station 4.4 miles from here

2 Total Climbing Routes

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

Classic Climbing Routes in Thumb Boulder

Mountain Project's determination of the classic, most popular, highest rated climbing routes for Thumb Boulder:
Hangnail Left   V2 5+     Boulder, 8'   
Browse More Rock Climbing Classics in Thumb Boulder

Featured Route For Thumb Boulder
Rock Climbing Photo: Sequence for Hangnail Right. Climber Razi, Photo R...

Hangnail Right V4 6B  CA : San Diego County : ... : Thumb Boulder
Start on the left side of the face but work through a series of sidepulls facing the wrong way to finish on the right....[more]   Browse More Classics in CA

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