A beautifully decorated pattern stone was discovered at the back of the chamber during restoration which is now in the care of the National Museum of Wales.
Daethpwyd o hyd i garreg a oedd wedi'i haddurno'n hardd yng nghefn y siambr yn ystod gwaith adfer ac mae hon bellach dan ofal Amgueddfa Genedlaethol Cymru.