[MCR] Bugaboos conditions August 14 -19th & Pigeon Spire Travel Warning

Subject: [MCR] Bugaboos conditions August 14 -19th & Pigeon Spire Travel Warning
Date: Sun, 21 Aug 2011 00:22:01 -0600
Greetings,

I was in the Bugaboos with 4 course participants and fellow guide Ben Firth from August 14-19th.

We found excellent lower elevation and challenging higher elevation conditions in the Bugaboos this week. With the large previous winters snowpack, a very wet spring/early summer, unseasonably cooler temperatures and recent new higher elevation snow/graupel/freezing rain.  This often meant wet rock/cracks at lower elevations and much snow, ice, verglass and iced up cracks on the higher elevation (above 2700 Meters) alpine rock objectives. This has caused many parties to take longer than anticipated, not be able to complete routes or even be forced to bivouac en route.

For example one party on NE ridge of Bugaboo reported verglass, snow and iced up cracks greatly slowing  and frustrating progress forcing a headlamp descent in driving freezing rain. Another party on the same route were benighted and spent an unpleasant forced bivouac during a raging storm on a South summit ledge to discover a cornice overhead in the morning which had built overnight.

Our team found that the shortcut ledges of normal routes  such as on Marmolata and Pigeon spires were not practicable, now being snow covered and steep, often with verglass leading to them. We were forced instead to undertake much more direct ridge lines requiring climbing ridge steps usually circumnavigated that were quite a bit more difficult,  snowed up and icy than usual, requiring extra time and care to complete.

TRAVEL WARNING! Besides several large crevasses, there exists a grave hazard on the oft-used Pigeon Fork Bugaboo Glacier approach/descent of Pigeon Spire. The hazard is in the form of a giant hidden lid as part of the scoop/trowel feature that exists at the base of the cliffs between the Pigeon Spire and the snow arete which leads to the West ridge route start. Some parties have traveled atop of this feature without knowing the hazard and there is a track right over it. The lid covers a large and deep crevasse chamber below. Parties are recommended to use the glacier closest to Pigeon Feathers - Maramolata instead which offers a well bridged and speedy approach/descent. See PDF picture attached.

Early in the week we noticed a major rockfall event from the North slopes of Anniversary peak. We also saw a large rock melt out and roll off of steep exposed ice (dry) glaciated terrain.

There were several good early morning freezes during the week requiring us to use crampons on any angled snow terrain which by 11 a.m or so softened to excellent boot travel. All the cols observed (Bugaboo - Snowpatch, Snowpatch - Pigeon, Marmolata - Pigeon Feathers remain in excellent condition. Lower elevation South, West faces and ridges of spires such as Brenta, Crescent and Eastpost are in excellent condition. Overall excellent crevasse bridges in glaciated terrain. We did notice some sagging bridges in the larger crevasses and bergschrunds of the upper glaciers. Ankle biter narrower crevasses above firn line are just beginning to appear. The lower Son of Snowpatch - Bugaboo glacier is still a wet glacier with snow on it but bare ice is quickly showing every day (large embedded rocks there).

As we left more seasonal temperatures were pervading and will likely greatly improve higher elevation rock route conditions. Expect higher rockfall, weakening crevasse bridges and cornice failure potential with this new trend. The trail has been improved yet again shaving off 15 - 20 minutes.

Despite the more challenging conditions we encountered, we were able to summit several spires, meet all of our objectives and have an excellent week.

Eric Dumerac - Professional Mountain Guide - IFMGA/ACMG, CAA II ,CSIA II

Mountain Skills Academy
www.msacourses.com
✆Canada: Canmore 011- 403-609-1564 

Attachment: Pigeon 2011.pdf
Description: Adobe PDF document

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