Snowfield
Overview
A snowfield is an area of relatively continuous snow coverage that persists on the ground, often at higher elevations or on shaded aspects, after surrounding areas have melted.
Key points
- Can range from small patches to extensive contiguous areas.
- Common at higher elevations or on shaded slopes.
- Changes daily and seasonally with melt and refreeze cycles.
- Footing, traction, and runout conditions vary widely.
- May obscure trail tread and markings.
Details
Snowfields occur where snow accumulates and melts more slowly than in surrounding terrain. They may cover trail tread, rocks, or vegetation, sometimes concealing features such as holes, streams, or uneven ground. Their surface conditions shift with temperature, solar exposure, and overnight refreezing.
For hikers, crossing snowfields can require additional attention to traction, route-finding, and runout (the path a slide could take). Morning crossings may offer firmer surfaces, while afternoon conditions can soften and increase postholing. Each snowfield presents unique considerations, and the decision to cross, detour, or retreat is based on local assessment.
Snowfields can also play a role in water availability, as meltwater feeds streams and small seeps. Their presence and condition often influence broader route planning in high or shoulder-season travel.
Related topics
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Illustrative hiking footage
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