Tinkinswood or its full name Tinkinswood Burial Chamber (Welsh: Siambr Gladdu Tinkinswood), also known as Castell Carreg, Llech-y-Filiast and Maes-y-Filiast, is a megalithic burial chamber, built around 6,000 BP (before Present), during the Neolithic period, in the Vale of Glamorgan, near Cardiff, Wales.