3. Left from the ranch on the unmarked and indefinite horse trail to a PETRIFIED FOREST, =5.5 m.=, considered one of the best examples of a petrified forest (_see North Roosevelt Regional State Park Tour above_) in the Badlands. The trip to this forest, which makes a nice day's outing, requires a guide. Southwest of Peaceful Valley Ranch, the route runs along the east bank of the winding, shallow Little Missouri to a CAMPING AREA (R), =8 m.=, sheltered by trees along the stream. It is furnished with tables, fireplaces, and wells, and several individual camping spaces have been developed along the road that circles through it. At =8.5 m.= the route fords the river--a passage which in times of high water cannot be effected by motorcars--and, turning SW. along the western bank, reaches a permanent CCC CAMP (L), =9 m.=, with its low, trim, slate-blue buildings lying next the stream on a level piece of bottom land overshadowed by lofty buttes. At =9.5 m.=, is a junction with a graveled road leading uphill away from the river. Right on this trail is a PICNIC SHELTER, =0.5 m.=, built over a spring and provided with a fireplace. Right from this shelter =5 m.= on a marked HORSE TRAIL, which winds among the buttes in a figure eight. At some points on the trail the tops of Square (Flat Top) and Sentinel Buttes (_see Tour 8_) are visible far away to the SW. At the center of the figure eight, forming a pleasant place for lunch, is a clump of trees with a spring flowing down over little sandstone terraces. At =9.8 m.= is the sandstone portal of the west entrance, beyond which is the junction with US 10 (_see Tour 8_), =10 m.= HIGHWAYS AND TRAILS TOUR 1 (Winnipeg, Man., Can.)--Pembina--Grand Forks--Fargo--Wahpeton--(Watertown, S. Dak.). US 81. Canadian boundary to South Dakota Line, 256.5 m. N. P. Ry. parallels route between Canadian border and Joliette; G. N. Ry. between Hamilton and Fargo; Milwaukee R. R. between Fargo and South Dakota Line. Winnipeg-Fargo route of Northwest Airlines parallels route between Canadian border and Fargo. Graveled roadbed except about 31 m. bituminous-surfaced. Accommodations of all types in principal towns. US 81 crosses North Dakota along its eastern boundary from the Canadian to the South Dakota border, and passes through the rich low valley of the Red River of the North, a wide level plain that was once the bed of the great prehistoric Lake Agassiz. The route parallels the Red River to Wahpeton, and the Bois de Sioux River between that city and the South Dakota Line. Constantly in sight to the left of the road are the heavily wooded river banks, but except for crossing several timbered tributaries the route runs through almost unbelievably flat green fields, broken here and there by an occasional farmstead.