Thumb Boulder Rock Climbing
BETA PHOTO: Two problems starting at the same holds
The climbs on this boulder are near vertical. Further, it features some of the better rock quality at Rancho Penasquitos.
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 North San Diego County area.
Weather station 4.4 miles from here
2 Total Climbing Routes
['4 Stars',0],['3 Stars',1],['2 Stars',1],['1 Star',0],['Bomb',0]
Featured Route For Thumb Boulder