I hiked a different trail today, on the same river but downstream toward Potsdam. Much of the Red Sandstone Trail follows the penstock between the dam and the Sugar Island power station. The penstock is supported by steel cradles and periodic concrete supports. One of my favorite sources of abstract images is the surface patterns on weathered concrete, a combination of cracking, lime leaching out for the cracks and occasional surface material such as moss, algae, and occasional graffiti. The top image has a touch of the green paint that covers the steel of the penstock.
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