The South Nahanni River cuts through the Mackenzie Mountains in four canyons with walls up to 1,000 m high. The name comes from the Dene name for the area, Nahʔa Dehé, the river of the land of the Nahʔa people. Today it is a national park reserve and a UNESCO World Heritage Site.
During the Klondike Gold Rush, some prospectors tried to use the Nahanni as a route to the Yukon goldfields, or to find gold of their own. Around 1908 the headless bodies of two Métis prospectors, brothers Willie and Frank McLeod, were found. Stories grew of a lost mine where they had struck gold, and more unexplained prospector deaths followed.
The legends live on in the map: Deadmen Valley, Headless Creek, the Headless Range and the Funeral Range. In 1947 journalist Pierre Berton flew up the 'Headless Valley' for the Vancouver Sun and quoted a prospector on the valley's 'sinister atmosphere' and the 'weird, continual wailing of the wind'.

