Type: Trad, TR
FA: Dan Hare and Scott Woodruff, 1979.
Page Views: 2,576 total · 12/month
Shared By: Michael Komarnitsky on Dec 31, 2000
Admins: Leo Paik, John McNamee, Frances Fierst, Monty, Monomaniac

You & This Route

40 Opinions

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Access Issue: Seasonal Closure Details


One of Tuck's defining features is a large, left-facing dihedral that arcs up steeply into a roof. In this dihedral is a very small crack that runs the length of the vertical dihedral. Follow this corner in, up, and finally out through the top.


Very tiny stuff for lead, slings for TR.


Fun! Well named -- Tony Bubb calls it a study in the angles of forces. Oct 24, 2001
Ivan Rezucha
Fort Collins, CO
Ivan Rezucha   Fort Collins, CO
Good climb. We wondered why, in Rossiter's Boulder Canyon guide, Hypotenuse was starred but Boiling Point, the more obvious and nice looking cracks to the right was not starred. Hypotenuse has interesting stemming moves. There are sloped ledges and holds on the left wall, but the right wall is essentially blank much of the way. Gear ranges from brass nuts and microcams to #1 and #2 Camalots. Oct 24, 2003
Ivan Rezucha
Fort Collins, CO
Ivan Rezucha   Fort Collins, CO
I see I am wrong about Boiling Point being the cracks right of Hypotenuse. Boiling Point seems to be further right around the corner, facing the road. What are the cracks just right of Hypotenuse? Oct 24, 2003
Three routes in this little rock.
Stay left into the dihedral, lots of fun. I would say 5.9.
Run the finger crack up the center, only two moves make this a climb otherwise its pretty simple. 5.8+ maybe a 5.9.
Then run the nose to the left, very simple a little chossy. I would say 5.6 or 5.7. Nov 26, 2008
Chris Zeller
Boulder, CO
Chris Zeller   Boulder, CO
Super classic. Fun easy stemming moves around a roof. Good rock and steep without difficulty make this a classic. Aug 28, 2012
Eric Klammer
Boulder, CO
Eric Klammer   Boulder, CO
Bring your baby Aliens/small stuff, this climb can be thin! The bottom of the dihedral currently sports a fixed WC Zero. I placed an okay nut above that and then a black Alien protecting the crux. Once through the crux, a great #1 C4 can be had. Enjoy! May 20, 2013
I'm not sure which guidebook you guys are using, but for the last 34 years, Hypotenuse has always been the thin crack in the face to the right of the corner. To quote Erickson's book 'Rocky Heights' from 1980: "a prominent, open book on the right hand rock. Climb a thin crack on the right hand wall (5.9+)." Apr 20, 2014
Lyons, CO
Dankasaurus   Lyons, CO
Climbed both the corner (lead) and the thin crack on the face (TR). Both could be considered dicey for gear by modern standards. Both lines are super fun. Jun 29, 2015