Excavation of the area situated on the highest terrace of the Poggio del Telegrafo revealed a stratigrafic sequence which runs from the early Iron Age to the modern era. The earliest occupation is attested by traces of several huts, delimited to the north by a cut in the bed-rock, probably made to form a terrace on the edge of the hill. The cut presented a wattle and daub wall with wooden posts fixed directly into the clay bed-rock. These structures have been provisionally dated to the period between the early Iron Age and the beginning of the Orientalizing period.
The subsequent phases seem to fit within the first half of the 7th century B.C. Following the abandonment of the huts, the area does not appear to have been immediately re-settled. Several pits filled with dumped material date to this phase. The area was then re-organized, an extensive layer of beaten flakes of clay bed-rock was put down, cut by a well which had been intentionally blocked using a dolium placed between two rock slabs. Inside the dolium were the fragments of a bucchero bowl.
In the mid 7th century B.C. a structure with a pisé wall was built up against the cut from phase one. Subsequently (third quarter of the 7th century B.C.) this structure was replaced by one with a base made of lumps of stone without mortar and pisé walls. The re-newed frequentation of the SE area of the slopes of the acropolis seems to take place within the mid Republican period. A semicircular pit excavated in the rock also belongs to this period. The fill produced material datable to the 3rd century B.C. The foundation of a monumental wall of late Republican date was built upon the material used to seal this pit. (Valeria Acconcia, Matteo Milletti)