Tinkinswood or its full name Tinkinswood Burial Chamber, also known as Castell Carreg, Llech-y-Filiast and Maes-y-Filiast, is a megalithic burial chamber, built around 6,000 years ago, during the Neolithic period, in the Vale of Glamorgan, near Cardiff, Wales.

The St Lythans burial chamber is a single stone megalithic dolmen, built around 4,000 BC as part of a chambered long barrow, during the mid Neolithic period, in what is now known as the Vale of Glamorgan, Wales.