The lake plain ends at ledges of Granby tuff and agglomerate (38.5). The outcrops east of the road are grooved with glacial striations, and the fragmental nature of the rock is clearly revealed in the smooth surface. Lava lies on the tuff west of the road (38.7) and also at the bottom of the volcanic series at the Aldrich Lake road (39.0). Coarse conglomerates make recurrent ridges as far as the base of the Range (39.5), where the road follows a shelf cut into the Holyoke lava flow just west of the Notch fault. The conglomerate east of this fault was displaced downward; and as it disintegrates easily, a depression has been cut into the Range east of the road. The quarry situated at the top of the Range (39.8) just north of the Amherst town line, has brought to light many fault fractures that have served the mineral collector well for almost a century. The Range trail (see pp. 73-75) westward leaves the highway at the town line marker, and the path eastward follows the old trolley line northeastward from the scales house. The route begins its descent (40.2) through a cut in conglomerate, and the entire northern valley is spread out below: Sugarloaf and Toby close the eastern side of the view, and hills far up in Vermont form the background in the northwest. The road quickly reaches the flat plain of Lake Hadley (40.7), with apple orchards stretching along its gravel shore line. The Bay Road crosses the highway (41.1) and parallels the Range from end to end. The lake deposits fail to conceal many earlier features. Two drumlins (see p. 9) rise to the east of the road (41.8) near South Amherst. South Amherst (42.7) is on an island in the old lake; erratic boulders cover the hilltop, and bare rocks mark the old wave-washed shore. The highway crosses Fort (or Freshman) River (43.8), and at the railroad tracks (44.6) it rises to the old lake beach, which is continued in the flat land on the south side of the Amherst College campus. The route turns left at Northampton Road (Route 9) and continues to Northampton (52.2). The Hockanum Road (State Highway 63), which follows the left fork at South Hadley (33.2), crosses the Lake Springfield sand plain (34.1) and rises above the lake level beyond Bachelor Brook (34.3), staying at this higher altitude beyond the junction with the Moody’s Corner road (35.3). The hills directly ahead are tuff, agglomerate and lava, and are products of the last volcanic episode in this region. Dry Brook (35.6) flows on the sandstone overlying the Holyoke lava sheet, and the latter outcrops in the road cuts (35.8) and to the left in Titan’s Pier (see pp. 60-61). The road to the Mount Holyoke House and Titan’s Piazza (see p. 61) turns right (36.0) where the highway breaks through the last of the lava mass.