A star-shaped time capsule: Trethevy Quoit

Trethevy Quoit, known locally as 'the giant's house', is a megalithic structure in Cornwall, England, United Kingdom. This portal tomb, covered in mystery and intrigue, dates back to the Neolithic period, making it over 5000 years old. Trethevy Quoit was likely used as a burial site or a place of worship, much like its counterparts in Brittany. The structure consists of five standing stones capped by a large slab and was originally covered by a mound, much like other portal structures. The cover slab features a natural hole, possibly used for astronomical observation. The group of horizontal stones is unique, featuring a small rectangular stone that allows access to the chamber. The back of the chamber has collapsed, leaving a pile inside. Trethevy Quoit was first mentioned in 1584 by John Norden, and was added to the Heritage at Risk Register in November 2017.

Sources: Wikipedia, OpenStreetMap, Wikidata, Wikimedia Commons