The Firth River is one of Canada's most extraordinary and remote wilderness fisheries, flowing from the northwestern corner of the Yukon Territory northward across the Arctic tundra before emptying into the Beaufort Sea. Geologically recognized as Canada's oldest river, the Firth carves through the dramatic landscape of Ivvavik National Park — a vast protected wilderness encompassing more than 10,000 km² on Yukon's North Slope. The river's crystalline waters wind through the British Mountains, passing through spectacular canyons and open tundra, offering anglers an experience that is as much about immersion in one of the continent's last great wild places as it is about fishing. The Firth flows through lands the Inuvialuit people have fished, hunted, and gathered on since time immemorial, and the river remains deeply connected to their cultural heritage and traditional practices.