The investigations at Anglona are bringing to light important evidence relating to the Classical phase, when a small agricultural village belonging to the chora of Heraklaia was built on the plateau, and to the medieval period, when the western part of the hill was transformed into a defended site comprising a small fortress with a watchtower. In 2018, excavations investigated the medieval fortress, formed by two buildings, and the work was divided into two zones: trench 2, on the south side of the fortress where there is an imposing building (CF2) and trench 3, on the north side of the fortress where part of defensive curtain wall was intercepted.

In trench 2, several important interventions relating to the occupation phases were identified. An intervention, datable to between the 17th and 18th centuries, involved the digging of robber trenches in order to extract material that was reusable for the construction of the buildings annexed to the church of S. Maria. Another intervention, datable to between the 15th and 16th centuries, saw the construction and reorganisation of several spaces in CF2 that were to be used for milling grain. Below the phases just described, the excavations exposed materials and structures belonging to the occupation phases of small Angevin and Svevan fort (13th-14th centuries). These were destruction levels mainly comprising imbrices and soil layers with clear traces of burning. Lastly, a layer of dark clay with abundant traces of charcoal with the characteristics of a dark soil probably of medieval date. This layer covered a Hellenistic wall built of stones and tiles, which will be investigated during the coming campaigns.