A is a type of prehistoric megalithic tomb usually consisting of two or more upright stones supporting a large, flat horizontal capstone. While typically thought of as simple "stone tables," the term "long feature" likely refers to long dolmens (or long barrows containing dolmens), which are characterized by an elongated mound of earth and stone covering the burial chamber . Notable "Long" Dolmen Examples The Dolmen and Long Barrow Connection - Prehistoric Britain