While it was originally covered by an earthen mound around 90ft/27m in length, only traces of this now remain, leaving its huge stones fully exposed to the skies.
Fe’i gorchuddiwyd yn wreiddiol gan domen bridd tua 90 troedfedd / 27m o hyd, ond dim ond olion hon sydd yma bellach, gan adael ei feini enfawr yn gwbl agored i’r nen.