The ancient Old North Trail, well worn by centuries of Indian travois, entered the United States from the north, a few miles west of present day Port of Piegan Customs. It ran along the east slope of the Rocky Mountains from Edmonton, Alberta, to at least as far as Helena, Montana. Perhaps one of the great migration routes of early man, the Trail more recently served the Northwest Plains Indians as the route for war parties and exchanging goods between Canada and the United States. The Museum of the Plains Indian in Browning relates the story of Plains Indian culture including native travel patterns from earliest times to the present.