DENVER & RIO GRANDE WESTERN ROUTE. 137 



cliffs on the south. The stream cuts into the upraised block of strata 

 on the south of this fault, and its south bank is followed by the 

 railroad through many cuts in the quartzite and finally in the 

 underlying granite. About half a mile beyond milepost 358, at a 

 sharp bend of tlie stream around a narrow point that projects from 

 the south, at least 50 feet of granite is exposed, and the massive 

 layers of the Leadville limestone lie like plates on the hillside across 

 the river. As the Leadville limestone never rests normally on the 

 granite it follows that the fault must lie in the river and has caused 

 the formation of Noname Park. 



This fault is the last of the series ; and, as the train swings around 

 the sharp bend toward the tunnel, the traveler may see the beds 

 descending rather steeply downstream. Here the stream turns once 

 more and cuts back toward the fault in a sharp curve, but the rail- 

 road pierces the rockj^ point, and when the train emerges from the 

 inky blackness of the tunnel the traveler finds himself passing 

 through the rock formations for the last time. The quartzites dis- 

 appear first below the stream, and finally the massive ledges of the 

 Leadville limestone; and then the train enters the open valley 

 formed by the erosion of the upper Carboniferous rocks and ap- 

 proaches Glenwood Springs. 



Here, on the right, is a grove of cottonwood trees, which surround 

 the bathing pool of hot sulphur water that has made this a famous 

 health and pleasure resort, and one may catch glimpses of the towers 

 of the Hotel Colorado, which stands somewhat higher on the moun- 

 tain slope and overlooks the lower part of the valley. 



Springs are also abundant in the river and beside the railroad track 

 just above the station. Glenwood Springs (see PI. LX) is at the 

 junction of Eoaring Fork with Colorado River. 

 Glenwood Springs. Eoaring Fork flows in a broad valley that it has 

 Elevation 5,758 feet, eroded in the soft Carboniferous shale — a valley 

 Denve^ 360 miles. ®^ broad tliat it seems like the principal valley. 

 The town is noted for its shade trees and its homes 

 and for its accommodations for the travelers who are attracted here 

 by the reputation of the springs. An added attraction is the famous 

 " Hanging Lake " (see Pi. LXI), which lies high up the slopes of the 

 canyon of Colorado Piver, about 12 miles from the town. Glenwood 

 Springs might also be called a coal-mining center, for although no coal 

 is mined at or near the town it furnishes an outlet for a great coal field 

 that lies to the south and west. A branch of the Denver & Rio Grande 

 Western Railroad turns to the south at Glenwood Springs and con- 

 nects with the coal-mining towns of Sunshine and Spring Gulch. 

 Forty miles south of Glenwood Springs and connected with it by 

 rail are the famous Yule marble quarries, which are now sending 

 their output to all the large cities of the East. A notable example 



