The Dalton Highway winds through strands of birch trees near Yukon River Camp, Alaska, USA, 03 September 2017. Stretching 414 miles (666 kilometers) north from central Alaska to Prudhoe Bay, the Dalton Highway is one of America's northernmost roads and arguably its most remote. Built as a supply road for the Trans-Alaska Pipeline, the Dalton was opened to public use in 1981. Largely gravel and littered with potholes, a round-trip drive takes four days. Though it still offers few facilities and no radio, cell service, or internet the Haul Road, as it is often called, rewards its rare visitors with spectacular Arctic scenery. (Photo by Jim Lo Scalzo/EPA)





Motorcyclists navigate a mountain pass through the Brooks Range as they drive along the Dalton Highway in Atigun Pass, Alaska, USA, 04 September 2017. (Photo by Jim Lo Scalzo/EPA)





A truck rumbles down 'the roller coaster', a series of steep hills along the Dalton Highway near Yukon River Camp, Alaska, USA, 03 September 2017. (Photo by Jim Lo Scalzo/EPA)





A sign along the Dalton Highway marks the Arctic Circle near Prospect Creek, Alaska, USA, 07 September 2017. (Photo by Jim Lo Scalzo/EPA)





A car rolls south along the Dalton Highway near Coldfoot, Alaska, USA, 03 September 2017. (Photo by Jim Lo Scalzo/EPA)





A message is scrawled on the Trans-Alaska Pipeline along the Dalton Highway near Wiseman, Alaska, USA, 04 September 2017. (Photo by Jim Lo Scalzo/EPA)





Coldfoot Camp is one of the few places to overnight along the Dalton Highway in Coldfoot, Alaska, USA, 04 September 2017. (Photo by Jim Lo Scalzo/EPA)





A sign marks a trucker's-only dining area at Coldfoot Camp, one of the few places to overnight along the Dalton Highway in Coldfoot, Alaska, USA, 06 September 2017. (Photo by Jim Lo Scalzo/EPA)





The house phone at Coldfoot Camp, one of the few places to overnight along the Dalton Highway in Coldfoot, Alaska, USA, 03 September 2017. (Photo by Jim Lo Scalzo/EPA)





The inside of an abandoned school bus has found new use along the Dalton Highway in Coldfoot, Alaska, USA, 03 September 2017. (Photo by Jim Lo Scalzo/EPA)





Daniel Johnson-Utsogn pushes a children's bike trailer full of his belongings along the Dalton Highway in the final days of a four-year-long walk from New York City to Prudhoe Bay near Wiseman, Alaska, USA, 06 September 2017. The 23-year-old adventurer said he walked more than 25,000 miles through 49 states. (Photo by Jim Lo Scalzo/EPA)





The Dalton Highway cuts through the Brooks Range near Atigun Pass, Alaska, USA, 06 September 2017. (Photo by Jim Lo Scalzo/EPA)





A caribou crosses the Arctic tundra along the Dalton Highway near Sagwon, Alaska, USA, 04 September 2017. (Photo by Jim Lo Scalzo/EPA)





Industrial traffic navigates the Dalton Highway through the Brooks Range near Atigun Pass, Alaska, USA, 04 September 2017. (Photo by Jim Lo Scalzo/EPA)





Industrial traffic navigates the Dalton Highway through the Brooks Range south of Sagwon, Alaska, USA, 04 September 2017. (Photo by Jim Lo Scalzo/EPA)





A truck navigates heavy mist as it rolls north to Prudhoe Bay along the Dalton Highway near Deadhorse, Alaska, USA, 05 September 2017. (Photo by Jim Lo Scalzo/EPA)





A truck sits idle along the banks of the Sag River next to the Dalton Highway near Deadhorse, Alaska, USA, 06 September 2017. (Photo by Jim Lo Scalzo/EPA)





Oil rigs sit in the Prudhoe Bay Oil Fields off the Dalton Highway in Deadhorse, Alaska, USA, 04 September 2017. Low oil prices have idled many of the North Slope's rigs. (Photo by Jim Lo Scalzo/EPA)





A fog bow floats above the Arctic Ocean near the end of the Dalton Highway in Prudhoe Bay, Alaska, USA, 05 September 2017. Though the Dalton ends 10 miles south of the Arctic Ocean in nearby Deadhorse, visitors can take a shuttle through the Prudhoe Bay Oil Fields, where public access is restricted, to reach the ocean. (Photo by Jim Lo Scalzo/EPA)





A truck rolls north along the Dalton Highway through the Brooks Range near Atigun Pass, Alaska, USA, 06 September 2017. (Photo by Jim Lo Scalzo/EPA)