Photo by Kolb Brothers 



THE HIGHEST SHEER WAEES IN THE GRAND CANYON 



The inner gorge is about 3,000 feet deep. The upper walls tower about 4,500 feet above 

 the river. In these narrow sections the floods sometimes rise 100 feet above the low-water 

 mark. It was very cold while going through this section. Little or no sun reaches the 

 bottom of these can}^ons in January, except where the course varies from its east to west 

 direction. Cold winds would sweep down from the snow-covered cliffs above and we were 

 constantly shifting about to keep warm. 



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