St Mary's Old Church, St Mary's
Church building · St. Mary's
Archaeological site
Porth Hellick Down is a Neolithic and Bronze Age archeological site located on the island of St Mary's, in the Isles of Scilly in Great Britain. The ancient burial monument encompasses a large cairn cemetery that includes at least six entrance graves, other unchambered cairns, and a prehistoric field system. The site is notable for having the largest assembly of surviving entrance graves.