ND 46 traverses a low range of sandy hills, the western rim of glacial Lake Agassiz. At =19 m.= is the junction with a dry-weather dirt road. Left on this road at =26.5 m.=, just across the river to the SHEYENNE RIVER PARK (_central building of native logs, spring-fed swimming pool, five picnic areas, cabins, and camp sites_), under development (1938) as a recreational center by a Federal land utilization project. The park includes an area of unusual scenic attraction. A road winds along the heavily wooded river bottom, and side roads and graveled trails lead out of the valley to the sand dunes which stretch away to the S. The great plain here was deposited in glacial days, when the rushing Sheyenne, then a large stream carrying the sediment-laden waters of the melting ice sheet, flowed into Lake Agassiz. As the lake retreated the sand was left to the winds, which pushed and whipped it into dunes that dip away toward the horizon. Hummocks of trees and shrubs appear like green islands in this wide sea of dull brown. In some places, to combat the moving sand, elm and oak bark has been laid lengthwise in the road to preserve the trail. CHRISTINE, =204.5 m.= (926 alt., 204 pop.), has a population 95 percent Scandinavian. When Christine Nilsson, the noted Swedish operatic soprano, appeared in the United States in 1873, she was honored by American Scandinavians, who named this town for her. A COLLECTION (_open by arrangement_) of pioneer implements, including spinning wheels, brass kitchen utensils, and relics from Fort Abercrombie, is owned by Dr. M. U. Ivers. ABERCROMBIE, =212.5 m.= (935 alt., 242 pop.), is a typically peaceful small town on the banks of the Red River. The air of serenity which lies over its tree-lined streets and substantial homes is in decided contrast with the bustling activity of the settlement which surrounded the pioneer post of Fort Abercrombie, first Federal fort in North Dakota, built in 1858. It was named for Lt. Col. John J. Abercrombie, officer in charge of its erection. The most westerly outpost of the settlers' advance during the 1860's, Fort Abercrombie became the gateway to the Dakotas. From here expeditions set out to the unexplored plains of the Northwest, and trains of settlers left by oxcart and covered wagons to seek homes on the prairie beyond. It was between Fort Abercrombie and Fort Garry that the first steamboat to ply the waters of the Red River of the North carried passengers and freight. Built in Georgetown in 1859, the _Anson Northrup_, named for its owner, who hauled the machinery overland from the Mississippi River, made its maiden trip to the Canadian post the same summer.