The north facing icehouse located in the grounds of Ynys-y-Big and was probably built for Thomas Williams MP. The inner and the outer chamber walls each have a door to them. The chamber is 2.7m in diameter and 5.3m deep to a possible pointed base.
Source: Sylvia P. Beaman and Susan Roaf, The Ice Houses of Britain, p.535.
C.H. Nicholas, RCAHMW, 7th December 2006.
