Detail, Granite Face. © Copyright 2018 G Dan Mitchell – all rights reserved.

Detail view of a section of a Yosemite Valley granite cliff face

Yosemite, and especially Yosemite Valley, is famous for its “granite” (quotation marks for any geologists reading this post…) cliffs, towers, domes, slabs, and other formations. While we tend to think of this rock as being “gray,” the coloration varies quite a bit depending on the nature of the rock itself, the presence of lichens or plants, and on the light. Almost everywhere the expanses of granite are cut through by intrusions of different colored rocks. I don’t usually think of this particular face as being all that colorful, but on this morning the light somehow brought out the rust-colored tones on many sections of the rock.

I did just enough rock climbing many years ago to have developed memories of the sensations of such rock, from the cold and smooth slabs, to sharp edges of cracks, and rough surfaces (you hope!) on some friction routes. A close look at this section of cliff reveals an amazing variety of surfaces and irregularities. Perhaps most obvious is the large, curving vertical crack towards the left. The dark water stains are also striking, as is that rust colored rock. A closer look reveals other patterns, including a diagonal rising from left to right.

G Dan Mitchell is a California photographer and visual opportunist. His book, “California’s Fall Color: A Photographer’s Guide to Autumn in the Sierra” is available from Heyday Books and Amazon.
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