Small medieval lime kiln, Site L, Lion Walk. Part of a complex of lime kilns. The associated pottery indicated that the kilns were of 14th -16th century date. This was one of nine kilns in the group, each consisting of a central reducing chamber with two opposing raking-out pits. The lime kilns were not all used at the same time. The kilns were heavily burnt and in places heavily vitrified. They were built into the top of the surviving Roman levels so that Roman layers formed the sides of the chambers and pits. Broken peg-tile set in daub was most commonly used to build the kilns although there was also some reused Roman tile. In each case, the two arches linking the three chambers were formed of peg-tile. These had been specially shaped for the purpose and were not fired very hard. No mortar was used in any of the kilns.<1>