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All Locations > Colorado > Boulder > Flatirons > South > Devil's Thumb
The Devil's Thumb as seen from the Shadow Canyon approach. Although this is a simple 'flatiron' it has what must be the biggest overhanging face in Boulder County. Photo by Tony Bubb, 2002.
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Devil's Thumb on a fall day
The Devil's Thumb casts its imposing figure upon Shadow Canyon by sunset. Photo by Tony Bubb, 11/07.
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Tony B
Apr 20, 2007
“The Devil's Thumb as seen from the Shadow Canyon approach. Although this is a simple 'flatiron' it has what must be the biggest overhanging face in Boulder County. Photo by Tony Bubb, 2002.”  

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Nearby Photos

The Devil's Thumb casts its imposing figure upon Shadow Canyon by sunset. Photo by Tony Bubb, 11/07.
Standing on the summit of South Boulder Peak.
The major free-hanging rappel on this beast can be done with a single strand 60m (or doubled 60s). Traverse up and right from the summit until you find two holes that you can thread with webbing or cord. Protect your sharp edges, and have a blast! It's a great rap!<br> <br> Also, please seriously consider climbing up again after the rap to clean up your anchor gear. I had to remove a considerable amount of webbing before I set my anchor. If anything, you can do the other of the two great routes on this wonderful piece of rock!
The rap.
Squish, no more Devil's Thumb.
From left to right... The Tower of The Moon (small, shaded), the Jamcrack Spire, the Maiden, the Fatiron, The Devil's Thumb, the Flying Flatiron, and the Devil's Wings as viewed from the South-East on the Old Mesa Trail.
Sedric on the rappel.
Devil's Thumb from the Flying Flatiron ....
Devil's Thumb seen from the west along Shadow Canyon Trail.
View from Shadow Canyon Trail.
Anna scrambling to the anchors on south side of summit (thanks Bruce and Mike)
Approaching the Thumb from the NW
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