In 2011, I travelled with my family down Yukon’s Hart River. It’s one of seven pure rivers in the Peel River watershed, a 68,000-square-kilometre wilderness that’s been at the centre of a legal dispute for many years and a land-use planning debate for more than a decade. For two weeks, we fished from the river’s vibrant green waters and gazed at the limestone and dolostone peaks of the Ogilvie Mountains.