Fabulous property co-owned by the Towns of Concord, Carlisle, and Harvard University. Although the Harvard property is privately owned, it's open to the public. Good thing as the history in this place is through the roof! Head up the Spruce Trail and check out the Saw Mill ruins then continue north to see the ruins of a colonial era lime kiln and a lime quarry. All this surrounded by glacial moraines, eskers, erratics, and drumlins. It's wonderful! Oh, and did I mention, Henry Thoreau is said to have wandered through these woods too!!!