The park was established on 20 December 2000 with an area of 144,505 hectares (357,080 acres; 557.94 sq mi).[5] In the National Ecological Framework for Canada used by Environment and Climate Change Canada, the park is in the Birch Upland ecodistrict of the Mid-Boreal Uplands ecoregion of the Central Boreal Plains ecoprovince of the Boreal Plains ecozone.The park is characterized with relatively flat highlands with an average elevation of 800 metres (2,600 ft) in comparison to the surrounding lowlands of the Athabasca River valley.[8][9] The Köppen climate classification of the park is Continental, Subarctic (Dfc) characterized by long, cold winters, and short, warm to cool summers.[15] Using the data from a weather station within the park, Legend Auto at the Legend fire lookout tower, for 1991 to 2020, the average daily temperatures exceeds 10 °C (50 °F) only for June, July, and August while average daily temperatures are less than 0 °C (32 °F) for November through March.In addition to old growth forests, multiple treed, shrubby and open bogs are essential habitat for many wildlife species.