Stock Photo of Geophysical Research Vehicle Crossing a Crack in Beaufort Sea Ice
After building a snow bridge to disperse weight, housing and equipment trailers are towed safely over a crack in the sea ice. Geophysical crews work during the arctic winter when they can travel out onto the ice of the Beafort Sea, north of the coast of Alaska. Photo taken around 1980 of a geophycical recording vehicle on snow tracks.

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