Tumulus

A tumulus (plural tumuli) is a mound of earth and stones raised over a grave or graves. Tumuli are also known as barrows, burial mounds, Hügelgrab or kurgans, and can be found throughout much of the world. A cairn (a mound of stones built for various purposes), might also be originally a tumulus. A long barrow is a long tumulus, usually for numbers of burials.