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THE NATIONAL GEOGRAPHIC MAGAZINE 



© F. P. Clatworthy 



INTERIOR OF HALLETT GLACIER, ROCKY MOUNTAIN NATIONAL PARK : COLORADO 



Not only is Rocky Mountain Park famous for its beautiful glaciers— Hallett, Tyndall, 

 Andrews, and Sprague's — but more especially for its glacial records of millenniums past. 

 Here in truth "the mountains, rock-ribbed and ancient as the sun," reveal to the eye of in- 

 quisitive man the story of the world in its making. 



