According to the Blackfeet, where is the most sacred part of Glacier National Park located?
Two Medicine:  Aside from Chief Mountain, the Two Medicine area is the most sacred section of the park to the Blackfeet. Chief Mountain: Chief Mountain (also called Old Chief Mountain) is located in the U.S. state of Montana on the eastern border of Glacier National Park and the Blackfeet Indian Reservation.
eastern border of Glacier National Park and the Blackfeet Indian Reservation