Malcolm Preserve is an eleven-acre nature reserve in Carlisle, Massachusetts, created from former farmland and co-managed by the Trustees of Reservations and the Carlisle Conservation Foundation. Purchased for preservation in 1998, it includes a half-mile trail that connects to a broader network reaching Estabrook Woods and the Punkatasset Reserve in Concord. Its importance lies in linking this small open-space parcel to neighboring protected landscapes, helping preserve local land while extending public access across a wider natural area.