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Frost forms on the surface of the ice at the edges of the Koyukuk river during freeze up.

Frost on the icy shores of the Koyukuk river

Frost forms on the surface of the ice at the edges of the Koyukuk river during freeze up.

Photo ID#: ak-6199.jpg
Photographer: Patrick J Endres
Model Release: No
Restrictions:
None
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