V. S. GEOLOGICAL SURVEY 



BULLETIN" 707 PLATE LXIX 



A. MARSHALL PASS. 



View from the hills on the south. This pass was discovered in 1873 by Lieut. William L. Marshall. 

 Its striking feature is the lack of the ruggedness that characterizes many of the other passes 

 through the Rocky Mountains. Photograph by Whitman Cross. 



B. OURAY PEAK. 



This view shows the tortuous route followed by the railroad in its climb to Marshall Pass, which 

 lies to the left, behind the shoulder of the mountain. The great glacial cirque in the northeast 

 side of the mountain looks like a c;fater, and on that account the mountain has been called 

 volcano. Photograph by the Detroit Publishing Co.; 

 Western Railroad. 



furnished by the Denver & Rio Grande 



