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Routes in Tangen Towers

DC Boy T,S 5.11c/d 7a 24 VIII 25 E4 6a
East Face/Upper Tangen Tower T 5.4 4a 12 IV 10 VD 3c
Hop, Skip, & Jump T,S 5.11c 6c+ 24 VIII- 24 E4 6a
Hoppy Birthday T,S 5.10a 6a 18 VI+ 18 E1 5a
In Focus T 5.10 6b 20 VII- 19 E2 5b
Pictureman Crack/Lower Tangen Tower T 5.7 5a 15 V+ 13 MVS 4b
South Face Right/Lower Tangen Tower T 5.9 5c 17 VI 17 HVS 5a
Standard Route/Lower Tangen Tower T 5.5 4b 13 IV+ 11 MS 4a
Stay Focused T 5.9 5c 17 VI 17 HVS 5a
Tangen Tunnel route T
Thumper S 5.12a 7a+ 25 VIII+ 25 E5 6a
Unnamed Hueco 1 T 5.9 5c 17 VI 17 HVS 5a
Zacchaeus T,S 5.10d 6b+ 21 VII+ 21 E3 5b
Unsorted Routes:
Type: Trad, 200 ft, 2 pitches
FA: unknown
Page Views: 1,301 total · 7/month
Shared By: Warren Teissier on Dec 13, 2002
Admins: Leo Paik, John McNamee, Frances Fierst, Monty, Monomaniac

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Temporary Trail and Raptor Closures Details


This route is more a scramble/adventure hike than a climbing proposition. It is however way cool and should be explored if you are ever in the vicinity of the Royal Arch.

Hike to the spring (hopefully you'll try this when it is dry) and hike West into the gaping cave under some chockstones held in place between the 4th Flatiron and the Lower Tangen tunnel. Climb into the cave and climb up a spiral staircase formed by large boulders, way cool!

This will eventually lead you to the top of the chockstones and into a small amphitheater nestled between the Tangen towers and the 4th Flatiron. This amphitheater is very vegetated and not by good weeds either, so watch out for the poison stuff. I did this in winter after the snow had melted, so the vegetation was dead and flatenned.

Once here, you have a choice to continue up some easy (class 4) slabs that will then place you just North of the 5th Flatiron. If you are into rough hiking you can continue up to the summit of Green mountain by squeezing between the 5th and Schmoe's Nose.

For less-adventurous folks looking to experience the tunnel only, as you emerge out of it, hike South via the saddle between the towers and then East back to the Royal Arch trail.


Standard rack.


Glen Charnoski
Boulder, CO
Glen Charnoski   Boulder, CO
This route is quite an adventure. Route finding was fun, as I didn't really read the beta about the route. Quite hard and slick and mossy getting over some chockstones. Good time of year to do it (spring) as the vegetation is trampled by winter snow. The bushwhacking was so bad, I went only to the top of the Upper Tangen Tower, which has quite a nice view of Royal Arch. Apr 9, 2015
Brian C.
Longmont, CO
Brian C.   Longmont, CO
Did the for the 3rd time and first time without snow yesterday. This route really sucks quite a lot and is one of the worst bushwhacks imaginable. I was surprised at how much thicker the brush is in the summer, and the poison ivy is EVERYWHERE! That said, it really should be considered a must do for the avid Flatiron hiker. The tunnel is cool, and there is a neat upper tunnel as well. You're guaranteed total solitude, it is hard to feel so removed from people, and this route totally does it. Do it, you know you want to. Jul 17, 2013
Possibly the worst bushwhack, but the only other people I have seen up there, besides hikers, on the Royal Arch Trail are those who I have brought along for the ride. The view from the top of the upper Tangen Tower is magnificent. It is also possible to use this route as access to the summit of the [Fourth] Flatiron. One might consider long pants for that maneuver, you might get all itchy. REAL itchy! There are also millions of little stickers. Jan 22, 2006
George Bell
Boulder, CO
George Bell   Boulder, CO
Regarding the bolted routes - see the routes added by Greg Hand last week (under Tangen Towers). Jan 26, 2003
There are 2-3 bolted routes in the amphitheater at the top of the tunnel. Does anyone know any information about them? Jan 26, 2003
George Bell
Boulder, CO
George Bell   Boulder, CO
Following this route to the top of Green Mountain is in my opinion the single worst bushwhack in the Boulder area. I recommend exiting early and escaping via the col between the Tangen Towers. People training for the Eco-challenge should do the complete climb daily, however. Dec 19, 2002

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