The Hart River, which runs through the Yukon Territory’s Peel Watershed, an area larger than the state of West Virginia that holds huge deposits of coal, gas and minerals, in Canada, Sept. 16, 2017. The wilderness is at the heart of a legal battle before CanadaÕs Supreme Court that could redefine the legal relationship between indigenous people and the countryÕs provincial and territorial governments under treaties they have signed in recent decades. (Aaron Vincent Elkaim/The New York Times)