Criterion (viii): In Nahanni National Park, there is exceptional representation of on-going geological processes, notably fluvial erosion, tectonic uplift, folding and canyon development, wind erosion, karst and pseudo-karst landforms, and a variety of hot springs. IntegrityNahanni National Park was established in 1976 and was inscribed on the World Heritage List in 1978. In 2009, Canada greatly expanded the limits of the national park by adding 2,500,000 hectares to establish the Nahanni National Park Reserve. Protection and management requirementsNahanni National Park World Heritage property is within Nahanni National Park Reserve, established under the Canada National Parks Act which provides effective legal protection for the property. The Consensus Team works with other levels of government, and other partners and stakeholders in its ongoing efforts to ensure the ecological integrity of Nahanni National Park Reserve.