A bell-shaped, south-facing forecourt, formed by the wall, leads to a central passageway lined with limestone slabs set on end.
Mae blaengwrt, siâp cloch, sy’n wynebu tua’r de, sydd wedi ei greu gan y wal, yn arwain tuag at gyntedd canolog wedi’i leinio a cherrig mawr calchfaen sydd wedi eu gosod i sefyll i fyny.