Taken from the Cornish Ancient Site....
This is a reconstructed barrow in a class of monuments called entrance graves or chambered tombs. It consists of a circular kerb of stones with an entrance; Brane barrow is similar.
Approximate Neolithic dating 3000-2500 bc and has a diameter of 4.95 m and a height of 1.5.m approximately. It was excavated in 1984, when a primary deposit in a pot was discovered, it also had, interestingly enough, turf and topsoil in the chamber – ritual deposits?
Entrance passage was deliberately positioned to face the midwinter solstice sunrise (same as Brane Barrow).