A caribou crosses the Arctic tundra along the Dalton Highway near Sagwon, Alaska, US. Stretching 414 miles (666km) north from central Alaska to Prudhoe Bay, the Dalton Highway is one of America’s northernmost roads and arguably its most remote. 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.
Photograph: Jim Lo Scalzo/EPA











