California Thirteeners List
Vulgarian Ramblers
The Thumb Details

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83. The Thumb


Unfortunately, Google Maps decided to discontinue support for v2 of their API, which has resulted in the peak markers disappearing from my topographic maps. I'm working on a solution now and hope to have this fixed within a few weeks.

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Official summit elevation4071m (13,356')
Summit elevation source mapSPLIT MOUNTAIN, CA USGS 7.5' Quadrangle (spot elevation)
DEM summit4067m
Map summit4071m
DEM saddle3885m
Map saddle3880m+
Official saddle depth610'
Saddle elevation source mapSPLIT MOUNTAIN, CA USGS 7.5' Quadrangle (20 meter contour)
Official saddle elevation sourceSPLIT MOUNTAIN, CA USGS 10 meter DEM
Difficulty (via easiest route)Class 2
Secor (3rd ed.) guidebook page225
Secor (2nd ed.) guidebook page220
Roper guidebook page218
SummitPost.org pageTHE THUMB
Climber.Org trip reportsthumb
SPS list classificationRegular
Summit UTM easting (NAD27)371530
Summit UTM northing (NAD27)4103590
Summit longitude (WGS84)-118.4461
Summit latitude (WGS84)37.0715
Saddle UTM easting (NAD27)371910
Saddle UTM northing (NAD27)4102860
Saddle longitude (WGS84)-118.4417
Saddle latitude (WGS84)37.0650