Research/training excavation continued, directed by Rob Poulton of SCAU, for SCC, SyAS, the Society of Antiquaries and others. The area outside the outer bailey ditch as found to have been extensively quarried for chalk. The resulting pits had subsequently been infilled and palace buildings constructed there c1200. Interesting finds included pieces of a medieval glass urinal from a garderobe shaft. (271) The 1993 season of excavation focused on the supposed line of the outer bailey ditch, but no trace of the feature was found, presumably because the ditch ran further to the east. A second trench in the area outside the ditch revealed a building sequence of some complexity. Of particular interest were the well-preserved remains of a late 12th century undercroft or cellar, part of the vaulting of which was found intact. The undercroft was probably built against the bailey wall along what is now Quarry Street. (277; see Guildford Castle monograph)