During restoration work on the church of S. Aniello a Caponapoli, undertaken by the Soprintendenza ai Beni Architettonici, excavation was completed of the remains of the town walls found beneath the church. In the transept two alignments of curtain wall built of orthostats were investigated. Both on an east-west alignment the innermost probably dated to between the 5th-beginning of the 4th century B.C., the other, which passed over the top of and incorporated the first, dated to the end of the 4th century B.C.

In the nave another curtain wall of orthostats was identified, slightly further forward than the other two. Excavation of the foundation trench and part of the emplekton suggested it dated to the mid 3rd century B.C. The stratigraphy was rendered complex by the original morphology of the site as well as by the probable presence, together with the town walls, of terracing structures and a gate. A road dating to the end of the 3rd century B.C. and buildings in opus quadratum dating to the end of the 4th century B.C. certainly existed and may have been part of the monumentalising of the acropolis. In the Roman period the situation appeared clearer and was characterised by a great Augustan dump which obliterated the Greek town walls to make way for the construction of opus reticulatum structures.