Generally, visitors gain access to the land by aircraft, but it is also possible to reach the refuge by boat or by walking (the Dalton Highway passes near the western edge of the refuge).
The Dalton Highway (Alaska State Highway 11) comes within five miles (8 km) of the park's eastern boundary, but requires a river crossing to reach the park from the road.
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It extends to the east as far as the Middle Fork of the Koyukuk River, which is paralleled by the Dalton Highway and the Trans-Alaska Pipeline.
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In 2009 Governor Parnell budgeted for a proposed road to Umiat branching off of the Dalton Highway.