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Gannett Peak
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Gannett Peak, South East Couloir 
Gooseneck Glacier Route T 
Northeast Ridge T 
Wells Creek Approach 

Gannett Peak, South East Couloir 

YDS: 3rd French: 1- Ewbanks: 1 UIAA: I ZA: 1 British: M 1a AI2 Steep Snow

Type:  Ice, Snow, Alpine, 600', Grade II
Original:  YDS: 3rd French: 1- Ewbanks: 1 UIAA: I ZA: 1 British: M 1a AI2 Steep Snow [details]
FA: Unknown.
Season: I climbed it on September 10th and it was in excellent condition.
Page Views: 7,520
Submitted By: PeterSLenz on Sep 12, 2011

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BETA PHOTO: Telephoto view from (summit ridge) of climber sty...

Gannet Peak S.E. Couloir 

This route is an excellent alternative to the Gooseneck Gully route, particularly if the Gooseneck bergschrund's snow bridge has melted out. It may be a bit faster than the Gooseneck route, and obviates the need to ascend chossy rock on the lower Gooseneck ridge. The route is not described in Joe Kelsey's guidebook, but the couloir is easily seen from Bonney Pass.
The route requires a long approach from Elkhart Park or Trail Ranch. Most parties will take 2 days each way for the approach, i.e. 5 days round trip. (Gannet has now been climbed in 12 hours car-to car!) From Titcomb Basin the elevation gain for the climb and the return trip is 5800 feet. This includes the 1400 foot re-ascent to Bonney Pass on the return to Titcomb.
The approach hike is long, but beautiful.The climb involves travel over a relatively safe potion of the Dinwoody Glacier. Unlike the Gooseneck route, this one does require that you negotiate an area of densely packed crevasses. Some of them are deep. The couloir is about 45 degrees in steepness, and gains 600-800 feet of altitude, from the Dinwoody Glacier's N.W. arm to the summit ridge of Gannett. An uncontrolled fall down the couloir would probably be fatal, and there is some potential for rockfall danger.
I descended the S.E. Couloir, and retraced my steps through the crevasses. If you (unlike me) are smart enough to bring a rope, you can descend the Gooseneck gully, and rappel over the bergschrund, instead of descending the S.E. Couloir.
The difficulty of this route will depend greatly on snow conditions. I encountered a surface of corn snow, bonded nicely to an icy/frozen layer underneath, which took my crampons well.

Update 7/6/12: This route was skied in Spring 2012. You can find a nice write-up with some excellent photos at 14' Well done, folks! PL


It is easily seen from Bonney Pass, and is the obvious snow couloir on the East aspect of Gannett. Approach from Bonney Pass as for Gooseneck route, but instead of crossing to the Gooseneck Glacier, you will ascend the N.W. arm of the Dinwoody Glacier. Ascend the couloir, then the summit ridge. Descend the way you came, or down the Gooseneck Gully.


I brought two short ice tools, and crampons. A rope would make the glacier travel safer, and would allow for rappels on the descent.
No need for rock gear, unless you wish to belay from the walls of the couloir. This would slow your progress and expose you to more rockfall danger.

Photos of Gannett Peak, South East Couloir Slideshow Add Photo
Rock Climbing Photo: Crevasse as you head toward the southeast couloir ...
Crevasse as you head toward the southeast couloir ...
Rock Climbing Photo: Moulin and Waterfall on the Dinwoody Glacier.
Moulin and Waterfall on the Dinwoody Glacier.
Rock Climbing Photo: Wide angle view (from summit ridge) of climber sty...
BETA PHOTO: Wide angle view (from summit ridge) of climber sty...
Rock Climbing Photo: Gannett Peak. SE Couloir on left. Gooseneck Pinnac...
BETA PHOTO: Gannett Peak. SE Couloir on left. Gooseneck Pinnac...
Rock Climbing Photo: A look up the southeast couloir, July, 26. 2013. M...
A look up the southeast couloir, July, 26. 2013. M...
Rock Climbing Photo: Looking down the SE Couloir on the descent.  "...
Looking down the SE Couloir on the descent. "...
Rock Climbing Photo: Looking down the gully
BETA PHOTO: Looking down the gully
Rock Climbing Photo: SE Couloir

Comments on Gannett Peak, South East Couloir Add Comment
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By jdorais
Oct 9, 2011

Looks great, nice job climbing an undescribed line!
By Roger Harris
From: Boulder, CO
Oct 10, 2011

Climbed this route September 1 of this year and descended the Gooseneck Route via one rappel over the bergschrund. Couloir was in great shape and crevasses on the Dinwoody Glacier heading up to Glacier Pass were modest and easily passed without any need for roping up. Thanks for writing this route up ... nice job! I have a few pictures posted in a MP album at and more at Cheers, Roger
By Andrew Smith
From: Minneapolis, CO
Oct 13, 2013
rating: 3rd 1- 1 I 1 M 1a AI2 Steep Snow

Did this route end of June this year and descended via Gooseneck. Titcomb Basin had a good amount of snow on it still which made the summit day longer. Bergschrund was completely covered on the Gooseneck route which made plunge-stepping and glissading down a breeze. Watch for fresh snow near the top of the SE Couloir as conditions can be hazardous. Extremely fun route, I would suggest this over the standard route if time/fitness/weather/competence call for it. Didn't grab the summit due to very poor weather unfortunately.
By Brett Verhoef
From: Northern Utah
Oct 27, 2013

We completed this route July 26, 2013. More snow would have been nice as crevasses were wide open and almost impassable once we left the main Dinwoody Glacier. We reached the southeast couloir around 10 AM and found the snow to be already slushy but still climbable. We unroped for the couloir but ice axes were a must. As we started to ascend, a large boulder went screaming down the right side of the couloir. Needless to say, we stayed left for the rest of the steep climb. Getting to the couloir earlier would have helped with snow conditions and rockfall. We got an early start from Bonney Camp but our folly was not traveling faster (too much picture taking and gawking). After summitting Gannett we decided that descending the southeast couloir was not safe and instead rappelled off of the Gooseneck route around the open bergschrund. Although the southeast couloir route requires a bit more know-how it seems like the more direct and faster route to Gannett.
By jobot88
Jul 13, 2015

I am interested in climbing Gannett and I am curios to the bergschrund. Can I bypass it or do I have to climb it. I have done several other mountains in the Tetons and in Idaho and I want to do garnet but have not climbed snow/ ice like that. What gear might I need and do I need 60 meter rope or something shorter? Thanks!
By PeterSLenz
From: Salt Lake City
Jul 14, 2015

Response to Jobot 88''s question:
You will need to negotiate the bergschrund or climb around it on some rock ( which LOOKS about 5.7 to me) if you climb the Gooseneck route. I have not summited via this route, but was stymied by the bergschrund in 2010.
When I climbed the SE couloir, there was no bergschrund to deal with, but there were crevasses on the glacier just like in Bret's great photo. The couloir itself is moderately steep, and you could die if you fell down it. If you are a seasoned snow/ice climber this will be an easy ascent, but it is not a good place to learn snow climbing. Regarding gear: most people will want crampons and at least one ice axe. I brought two 50 cm axes and steel crampons. Regarding the rope, I would take a light glacier rope, probably 8.8 mm or less. Since I have not descended the Gooseneck Route I do not know what length of rappel would get you past the 'schrund. Bret?
By Brett Verhoef
From: Northern Utah
Jun 8, 2016

The rappels down the Gooseneck Pinnacle were two 20+ m rappels. We had one 60 m rope and had no problem. The first rappel is from the top of the pinnacle to the obvious ledge halfway down. Bring webbing & bail biners because the existing anchors get weathered, if they are there at all.
By DavisMeschke Guillotine
From: Pinedale, WY
Dec 3, 2016

I've seen a couple of comments regarding large blocks/boulders coming down the couloir.. This is true, and its a shooting gallery in the right conditions. You should plan on getting up the couloir EARLY. The objective hazards on this route are quite easily managed.
By Thomas Keefe
From: Ankeny, IA
Aug 23, 2017

We took a variation of this route on 7/19/17 where we took climber's right branch of snow about 1/3 - 1/2 way up the couloir (new route?). Decision seemed obvious since most of the rock fall seemed to originate from the left (main) arm of the couloir. Did a running belay placing pickets (mostly t-slots) on the way up. Snow was in great shape and we got a good early start and moved quickly. Got a lot steeper as we got closer to the the top (maybe 50-55 degrees which was a bit more than we had been expecting).

We then climbed about 1 1/3 pitch (2 full 40m rope lengths) of 5.4ish rock and then an easy traverse and came out right at the top of the Gooseneck Couloir at the pinnacle. Should have had some rock pro, but ended up not needing it as there were plenty of good flakes and horns to throw slings around (quad was a lifesaver). Not sure if anyone has done this variation, but with the added rock climbing it was a fun alpine climb!

Came down via the Gooseneck (standard) route.

Got a video:

Unfortunately missing some of the more interesting part of the climb since my battery died and I was unable to change it for a good while.

There was a good deal more snow in the area this year, not sure how easy the route we took would be in drier years...

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