Construction of the kiln K3 appeared to be a Stone Base similar to the earliest kiln K2 covered iby a protective layer of clay upon which the brick flooring was laid. Presumably, the experience of K2 showed that the heat severely damaged the stone thus the intermediate clay lining. When it came to K1 which we believe is the most recent kiln, the use of stone was limited. See general picture (right) and detail of drain (below).
Only the eastern half of the kiln remains, the remaining half being largely destroyed. It is believed to have been a downdraught kiln based upon the style of construction. The 2 photographs below show the base of the kiln with fire holes at the side (below) and central flue (2nd below). Some of the fire holes contained coal whilst others contained coke. One fire hole contained well glazed bricks which suggest it may have partially collapsed and went out of use. .