Outmap
Guidebooks/Rogers Pass/Tree Triangle

Tree Triangle

51.2186° N, 117.4708° W
Updated 03/04/2026

Route Details

Tree Triangle sits immediately above the Asulkan Hut in Glacier National Park and is formally rated “Complex – Class 3” avalanche terrain under the Avalanche Terrain Exposure Scale. This is not a mellow hut-side warmup: expect overlapping paths, exposure to overhead start zones, and terrain that demands full winter permit compliance, current avalanche bulletin, and a conservative group mindset.

From the hut, the line is a short skin into steep, tight trees that ski more like a confined feature than a full run. The glades are narrow with limited options to open it up, and small route-finding errors can push you into steeper rolls or terrain traps. Treat every lap as serious avalanche terrain with careful spacing, regrouping only in well-sheltered islands of safety away from the fall line.

Tree Triangle is highly conditions-dependent. It gets hammered quickly in good weather, and after storms the combination of wind effect, cross-loading from the surrounding alpine, and the confined forest can turn it into breakable, slabby, or unskiable mess. Best days are with a right-side-up snowpack, moderate hazard, and enough visibility to read micro-features; avoid it when hazard is elevated or when wind slabs are building above the hut.

Activity

Downhill

Subtype

Backcountry

Difficulty

Freeride

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