Elk Island National Park is a national park in Alberta, Canada, that played an important part in the conservation of the plains bison. The park is administered by the Parks Canada Agency. This "island of conservation" is 35 km (22 mi) east of Edmonton, along the Yellowhead Highway, which goes through the park. It is Canada's eighth smallest in area but largest fully enclosed national park, with an area of 194 km2 (75 sq mi).