Lately I've become a little fascinated by abandoned mills in the forest. Almost every nature preserve or piece of conservation land with a brook has one. New England is littered with them. Sometimes it's a bit tough to photograph them, but I enjoy doing it. Here's the latest couple -
They're both on the same stream, maybe a mile apart. The second one has a separate spillway on the other side of the earthwork to the left. Probably they were grist or saw mills.