The giant 16½ft/5m ‘capstone’ appears to be precariously balanced on three ‘uprights’, though it has remained in place for over 5,000 years.
Mae’r ‘maen capan’ enfawr 16½ troedfedd/5m o uchder yn ymddangos fel pe bai’n cydbwyso’n ansicr ar dair carreg unionsyth, er ei fod wedi bod yno ers dros 5,000 o flynyddoedd.