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Elevation: 150 ft
GPS: 32.9268, -117.1772
Google Map · Climbing Area Map
Page Views: 3,445 total · 25/month
Shared By: Raz on Dec 22, 2012
Admins: Mike Morley, Adam Stackhouse, Salamanizer Ski, Justin Johnsen, Vicki Schwantes

Description Suggest change

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

Getting There Suggest change

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.

3 Total Climbs

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Location: Thumb Boulder Change
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Classic Climbing Routes at Thumb Boulder

Mountain Project's determination of the classic, most popular, highest rated climbing routes in this area.
V2 5+
 17
Hangnail Left
Boulder
V4 6B
 4
Hangnail Right
Boulder
Route Name Location Star Rating Difficulty Date
Hangnail Left
 17
V2 5+ Boulder
Hangnail Right
 4
V4 6B Boulder
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