The next morning, drive northeast on U.S. 87 through the Upper Missouri River Valley's waving prairies. The tiny riverside enclave of Virgelle, settled by homesteaders in 1912, entices solitude-seekers. The Virgelle Mercantile (or just the Merc) is the town's only business, with antiques for sale, renovated bed-and-breakfast rooms and six original homesteader cabins for rent, complete with kerosene lamps and wood-burning stoves. The Virgelle Ferry has been crossing the river here since 1913, and it's free.
From Virgelle, head northeast to a region known as the Hi-Line. running adjacent to U.S. 2 less than 100 miles south of Canada, this land of wind-sculpted prairies and wheat fields seems to extend forever. Havre, the Hi-Line's biggest city, was founded as a railroad hub in 1879 and eventually developed a split personality, one at the street level and one below. The upper city was staid and respectable. When a 1904 fire destroyed the city, businesses moved to their basements to continue operating. The underground district-built into hollowed-out tunnels that connected the basements-grew to house a brothel, gambling houses and opium dens. Hear this fascinating below-the-sidewalk history on a Havre Beneath the Streets tour.
More history can be seen at the H. Earl Clack Museum, where you'll find a great display of dinosaur eggs, plus amazingly informed guides who can walk you through the neighboring Wahkpa chu'gn Buffalo Jump Archaeological Site. At this 2,000-year-old site, see where and how stone tools were used, learn how to throw an atlatl and marvel at a wall of buffalo bones that's 20 feet deep. Before leaving Havre, fill up on soup and sandwiches at Havre Greatful Bread, then make your way east along the Hi-Line. At Bear Paw Battlefield, a Nez Perce National Historical Park site, take a ranger or self-guided tour of the area that saw the final battle of the Nez Perce Flight of 1877. More history awaits at the Fort Belknap Indian Reservation; book a visit with Aaniih Nakoda Tours to learn about the Assiniboine (Nakoda) and Gros Ventre (Aaniih) tribes.