Between 11–4pm on the 15 of June 2024, an open day celebrating the prehistory of Wales and beyond will take place at the Bryn Celli Ddu.
Rhwng 11–4pm ar 15 Mehefin, bydd diwrnod agored i ddathlu cynhanes Cymru a thu hwnt yn cael ei gynnal ym Mryn Celli Ddu.