The raised ledges bordered the opus signinum floor (SU 2202); cf. SUs 2201, 2026, and 2178. In 2011 the raised ledge of coccio pesto looks to be errored, is no longer smooth. Irregular chunks of rock included, not seen anywhere else on site. Average size of chunks: 10 cm (L), 5cm(W), 4cm(H). More visible inclusions than other part.
SU 2248, SU 2249, SU 2187, SU 2186