new hampshire, forest, national park, national parks, fall, fall color, fall colors, autumn, autumn color, autumn colored, trees, river, river bank, long exposure, nature, new england, travel, travel destination, travel destinations, hiking, blue sky, water, roaring, river banks, raging, photography, sound, woods, plant, noise, stream, roar, thunder, tree, hike, woody plant, wood, boom, season, walk, vegetation