Final course of opus reticulatum wall = to 20017 on top of which 20019 was later built; cocciopesto floor 20048 abuts walls.
Detail of corner where SU 20067 (under SU 20019) meets SU 20042 (over SU 20018 = 17018) and SU 20058. View toward the W
SU 20067: view toward E