The high mesas west of Canyonlands National Park do not form as distinct a mainland as does Hatch Point, but rather are broken up into a maze of peninsulas and islands, as shown in figure 1. Owing to the gentle northwestward dip of the rock strata, the altitude of the mesas declines from about 7,000 feet in the south to about 5,300 feet in the north and northwest, where the whole aspect of the country becomes more rounded and subdued. As shown on the map (fig. 1), however, the name Orange Cliffs is applied to much of the eastward-facing cliffs, which are made of the Wingate Sandstone capped by the Kayenta Formation. Remnants of the Navajo Sandstone increase in number to the north and west, where remnants of the next two younger rock units—the Carmel Formation and the Entrada Sandstone—also occur. Thus, the cliff-forming units dip downward beneath younger rocks that form the relatively flat Green River Desert to the northwest, also referred to as the San Rafael Desert. Figure 32 is a view southeastward from The Spur, shown on the map (fig. 1) as the northern section of the Orange Cliffs. At present (1973), the areas west of the Green River and the main stem of the Colorado River are the least accessible of any in the park and in this respect have not changed much since Butch Cassidy and his Wild Bunch roamed the area, except that the former main horse trails are now jeep trails. A secondary road south from the town of Green River goes past the north side of the Horseshoe Canyon Detached Unit (figs. 1, 2) and connects with another secondary road to the west, which joins Utah Highway 24 at Temple Junction, 20 miles north of Hanksville; near Horseshoe Canyon a jeep trail leads south to the Orange Cliffs. Owing to blowing sand, these “roads” are not considered reliable for passenger cars and are best negotiated by four-wheel-drive vehicles or horses. [Illustration: VIEW SOUTHEASTWARD FROM THE SPUR, in northern section of Orange Cliffs. Junction Butte and Grand View Point on left skyline; Abajo Mountains in extreme distance to right of center. Photograph by Parker Hamilton, Flagstaff, Ariz. (Fig. 32)] [Illustration: LOOKING NORTH DOWN MILLARD CANYON from head of canyon a mile northwest of French Spring. Note small arch or window in the Navajo Sandstone at upper left, which is shown in figure 1 as “Arch.” The Navajo is underlain by the cliff-forming Kayenta Formation and Wingate Sandstone resting upon a sloping base of the Chinle Formation and, farther downstream, ledges and slopes of the Moenkopi Formation. Photograph by Parker Hamilton, Flagstaff, Ariz. (Fig. 33)]