hydro electricity, power plant, historic building, landmark, autumn color, fence, stairs, ladders, pipes, concrete, metal, trees, leaves, walls, incline, rock, cloudy sky, cold, rained, windy, slope, wall, blowy, low temperature, leaf, temperature, fencing, tube, passage, woody plant, stairway, conduit, plant, barrier, ladder, building material, paving, plant part, tree, pipe, coldness, steps, foliage
A wide angled perspective on the penstock installed at Snoqualmie Falls Hydroelectric Plant in 1957. A penstock feeds the generator that uses hydro power and converts it into electricity. This penstock is still in use.