The summit of Atigun Pass, where the Dalton Highway crosses the Brooks Range at 4739 feet

(September 3, 2010)

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Descending the grade south from Atigun Pass in threatening weather

(September 4, 2010)

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A howitzer emplacement for avalanche control at the south base of Atigun Pass

(September 3, 2010)

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Chandalar Shelf in the Brooks Range just south of Atigun Pass

(September 3, 2010)

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The northernmost large spruce tree on the Dalton Highway, south of Atigun Pass, girdled by a vandal

(September 3, 2010)

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