Roadside turnout with historical information sign, paved - South side of the highway. 'Fort Peck Indian Reservation - is the home of tow tribes, the Assiniboines, whose forefathers were living in this vicinity when Lewis and Clark came up the Missouri in 1805, and the Dakota (Sioux) descendents of the 'hostiles' who fiercely resisted the white invastion of their homelands. Some of the Dakotas took part in the Minnesota uprising in 1862 and moved west when the Army tried to round them up. Others took park in Custer's demise at the Battle of the Little Big Horn in 1876. The Assiniboines, also of the Dakota descent, split from the Yanktonai band in the early 1600's and migrated west.' City of Glasgow to Montana/North Dakota State Line Welcome to Montana! From the wondrous geological features of Yellowstone to the majesty of Glacier, Montana\'s National Parks inspire and astound. The famous Lewis and Clark Expedition crossed Montana in 1805 and then again in 1806. Montana offers Rafting, hiking, hot springing, fly fishing, horseback riding, rock climbing, mountain biking, skiing hunting and more.