Excavations suggest that the site was in use for as many as 1,500 years, demonstrating how significant these monuments must have been to our early ancestors.
Awgryma cloddiadau fod y safle wedi’i ddefnyddio am gynifer â 1,500 o flynyddoedd, gan arddangos mor arwyddocaol y bu’r henebion hyn i’n cyndadau cynnar, mae’n rhaid.