This concrete threshold, in phase with walls 7079 and 7080, served as the entrance to Room 3 in its last phase of reorganization. It was covered by a floor, of which only preparation 7135 was preserved.
E-W ashlar wall forming E part of S limit of Room 1 and Opus mixtum wall built on top of wall 7057 and Tufo slab floor at N end of Room 3 and Ashlar wall running N-S at E limit of Room 3 and Tufo block and mortar on slabs 7130 and Upright ceramic tube south of wall 7131 and Opus reticulatum wall S of floor 7130 and Fill of circular cut S of wall 7131 and Petit appareil wall running N-S at W limit of Room 3 and Ashlar block aligned E-W in Room 3, covered by wall 7079 and Buttress of tufo blocks built against W side of ashlar wall 7078 and Concrete threshold between walls 7079 and 7080 and Petit appareil wall running N-S south of wall 7079 and Buttress of tufo blocks S of buttress 7097
View from west
View from east