Keywords: Duck Brook Bridge, Acadia National Park. carriage road, Mount Desert Island, Maine, ME, nature, stone, stone work, outdoors, water, brook, arch, fall foliage, autumn, fall, picturesque, scene, scenery, scenic, craftsmanship, masonry, stone masonry, John D. Rockefeller's legacy, philanthropy, impressive, inspiring, inspiration, bridge, Duck Brook, leaves, Hancock County, vertical