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Black Diamond Twilight

Climbing Telegraph Peak - 300x300 placeholder

The water-resistant/breathable Twilight replaces Black Diamond's Winter Bivy as the lightest bivy sack in the Black Diamond collection. The major difference, aside from a (more)

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When there is snow, SierraDescents is Andy Lewicky's California backcountry skiing and mountaineering website. Without snow, sierradescents becomes an ill-tempered hiking and climbing blog.

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