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THE POPULAR SCIENCE MONTHLY
![](//upload.wikimedia.org/wikipedia/commons/thumb/9/92/PSM_V85_D072_Looking_up_from_yosemite_valley.png/540px-PSM_V85_D072_Looking_up_from_yosemite_valley.png)
Looking Up Yosemite Valley from Artist's Point. El Capitan on the left is a monument to the resistance of massive granite to erosion. Cathedral Rocks, above Briadal Veil Falls, on the right, show the weathering of fissured zones.