Couple Terri Cairns and Peter Mather take a break during hike to check out the view of fairy meadows and Mt Harrisson Smith. The Cirque of Unclimbables, a circle granite walls, is a rock climbing mecca which draws climbers from all over the world. Nahanni National Park is one of the world's top paddling/canoeing rivers, and Unesco World Heritage site. The Nahanni River is also a Canadian Heritage River. Northwest Territories (NWT) Canada.