[Illustration: LOOKING WEST FROM DIVIDE ON BROADWAY 2 MILES EAST OF WEST ENTRANCE TO MONUMENT. Monoclinal hill on right is Brushy Basin Member of Morrison Formation capped by basal beds of Burro Canyon Formation. Rocks at left middle are blocks of sandstone in the Salt Wash Member of the Morrison. (Fig. 43)] ROAD INTERSECTION At the next intersection, Colorado Highway 340 turns right and continues about 2½ miles to Fruita; the highway to the left reaches the West Entrance of the Monument in a quarter of a mile. Before turning left into the Monument, however, we will interrupt our description of the trip by making a new start from Fruita for the benefit of people travelling from this direction. [Illustration: Bison] From Fruita to the West Entrance of the Monument MORRISON FORMATION [Mile-marker 9] From the Fruita interchange on I-70, the overpass leads north into the town of Fruita, and Colorado Highway 340 leads south about 2½ miles to the West Entrance of Colorado National Monument. One mile south we cross the new bridge over the Colorado River; the old bridge formerly connecting Fruita with the Monument may be seen half a mile upstream. Just south of the new bridge we see sandstone on the left and green shale on the right, both part of the Burro Canyon Formation. The high hill on the left is made up of brightly colored siltstones and mudstones of the Brushy Basin Member of the Morrison Formation capped by the basal sandstone of the Burro Canyon Formation. On the southeast side of this hill is another bronze plaque set in a masonry monument, similar to the one at Riggs Hill (fig. 39), commemorating the discovery and removal in 1900 by Elmer S. Riggs of a skeleton of the immense dinosaur _Apatosaurus excelcus_ Marsh. (See figure 23_B_). About 1¾ miles northwest of the new bridge is the Fruita Paleontological area discussed on page 50. Just south of the hill, the highway curves gently to the left across a relatively flat surface of the Morrison Formation. To the right may be seen good exposures of the Entrada Sandstone, at the north end of which curbstones were quarried from thin beds of the white Moab Member for use in some of the parking areas along Rim Rock Drive. Some of the beds are ripple marked[36] from wave action along ancient beaches or within ancient lagoons. Some ripple-marked curbstones from this quarry may be seen in the parking area at Red Canyon Overlook, and elsewhere in the Monument. As we approach the Monument we see that to the left the rock strata are bent downward toward us along what geologists call a monocline (see figs. 27 and 30), but to the right may be seen cliffs of dark Proterozoic rocks surmounted by slopes of the red Chinle Formation and cliffs of the buff Wingate Sandstone capped by the lowermost beds of the resistant Kayenta Formation. The bent and broken rocks ahead are well shown in figure 33.