Saturday, 15 July 2017 13:33

The Front of Allegheny

From the great east/southeast-facing escarpment of the Allegheny Mountains at Bear Rocks on the edge of the Dolly Sods Wilderness in the Monongehala National Forest, the view to the East and South seems to go on forever; but it is the rocks themselves that invite closer attention. These outcrops of Pottsville Conglomerate rim the edge of the uplift from which one can, on a clear day, peer over into the Shenandoah beyond the synclinal ridge of Massanutten Mountain. The sandstones of the Pottsville formation take us back to the early-to-middle Pennsylvanian Period, from 323-307 million years before the present, when the great swamps of the Carboniferous were in full march, the word "coal" had yet to be invented, and magnificent plants covered the Earth. Kneeling along one of the rimming outcrops and looking to the southwest along the escarpment, I used a focal length of 32mm to give me the angle-of-view I wanted. An aperture of f/22 provided depth-of-field and a shutter speed of 1/8th second at ISO 100 gave me an overall slightly-lighter-than-medium exposure. It is said that only the rocks are forever; I pray that it will be our keen wisdom to preserve the Bear Rocks safe from our baser tendencies.

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