In Northwest Alaska, a proposed mining road has become a flashpoint in a region already stressed by climate change. The 211-mile (340-kilometer) Ambler Access Road would cut through Gates of the Arctic National Park and cross 11 major rivers and thousands of streams relied on for salmon and caribou. The Trump administration approved the project this fall, setting off concerns over how the Inupiaq subsistence way of life can survive amid rapid environmental change. Many fear the road could push the ecosystem past a breaking point yet also recognize the need for jobs.

A strategically important mineral deposit

The Ambler Mining District holds one of the largest undeveloped sources of copper, zinc, lead, silver and gold in North America. Demand for minerals used in renewable energy is expected to grow, though most copper mined in the U.S. currently goes to construction — not green technologies. Critics say the road raises broader questions about who gets to decide the terms of mineral extraction on Indigenous lands.

Climate change has already devastated subsistence resources

Northwest Alaska is warming about four times faster than the global average — a shift that has already upended daily life. The Western Arctic Caribou Herd, once nearly half a million strong, has fallen 66% in two decades to around 164,000 animals. Warmer temperatures delay cold and snow, disrupting migration routes and keeping caribou high in the Brooks Range where hunters can’t easily reach them.

Salmon runs have suffered repeated collapses as record rainfall, warmer rivers and thawing permafrost transform once-clear streams. In some areas, permafrost thaw has released metals into waterways, adding to the stress on already fragile fish populations.

“Elders who’ve lived here their entire lives have never seen environmental conditions like this,” one local environmental official said.

The road threatens what remains

The Ambler road would cross a vast, largely undisturbed region to reach major deposits of copper, zinc and other minerals. Building it would require nearly 50 bridges, thousands of culverts and more than 100 truck trips a day during peak operations. Federal biologists warn naturally occurring asbestos could be kicked up by passing trucks and settle onto waterways and vegetation that caribou rely on. The Bureau of Land Management designated some 1.2 million acres of nearby salmon spawning and caribou calving habitat as “critical environmental concern.”

Mining would draw large volumes of water from lakes and rivers, disturb permafrost and rely on a tailings facility to hold toxic slurry. With record rainfall becoming more common, downstream communities fear contamination of drinking water and traditional foods.

Locals also worry the road could eventually open to the public, inviting outside hunters into an already stressed ecosystem. Many point to Alaska’s Dalton Highway, which opened to public use despite earlier promises it would remain private.

Ambler Metals, the company behind the mining project, says it uses proven controls for work in permafrost and will treat all water the mine has contact with to strict standards. The company says it tracks precipitation to size facilities for heavier rainfall.

A potential economic lifeline

For some, the mine represents opportunity in a region where gasoline can cost nearly $18 a gallon and basic travel for hunting has become prohibitively expensive. Supporters argue mining jobs could help people stay in their villages, which face some of the highest living costs in the country.

Ambler mayor Conrad Douglas summed up the tension: “I don’t really know how much the state of Alaska is willing to jeopardize our way of life, but the people do need jobs.”

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Follow Annika Hammerschlag on Instagram @ahammergram.

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