Pontyberem (Llannon Rd) What 3 words: bibs.stone.crackling Original Farm name on tithe map: Cwm Blawd, now called Coed Mawr. Dimensions (cms)H - 80 (in its current condition)L - 210W - 130 Building material is stone, however inner cavity is a mixture of concrete & stone. It is in good condition, however the top slab has been removed/demolished.