Beneath the brewhouse at Christ Church was found a number of pits a furnace hewn out of the natural clay. The furnace was 2 metres deep and approximately 5 x 5 metres square. The base of the furnace was covered with charcoal, and the clay sides had been baked bright orange due to the heat of the furnace. To the south was a deep sloping access sharft leading, at its base, to a stoke hole. The stoke hole was filled with charcoal, and was connected to the furnace via a clay lined flue. To the north, at the base of the furnace. was a second flue. This was also filled with charcoal, and maybe connected to a further shaft as yet undiscovered.