Bryn Celli Ddu

Bryn Celli Ddu is a prehistoric site on the Welsh island of Anglesey located near Llanddaniel Fab [1]. Its name means 'the mound in the dark grove' [1]. It was archaeologically excavated between 1928 and 1929 [1]. Bryn Celli Ddu is generally considered to be one of the finest passage tombs in Wales [1]. Its passage and burial chamber are complete, and it is still buried under a mound or cairn, reinstated following its excavation in 1929 [1]. The earliest identified remains at the site are a row of five postholes previously thought to have been contemporary with the tomb [1]. Radiocarbon dating of pine charcoal from two of the pits, carried out in 2006, showed these to date from around 4000 BC, putting them at the end of the Mesolithic [1]. Around 3000 BC, a henge monument was constructed [1].