In the 2006 campaign the field work was undertaken in the area of the chamber subsequently added to enclosure III. The excavation results definitively confirmed the building chronology of the room itself, to be dated to around the mid 2nd century B.C. in concomitance with the obliteration of enclosure I, situated in front of temple B. Exploration of the internal stratigraphy also highlighted the fact that this space functioned exclusively as a vestibule and did not house cult structures. The exploration was extended to the south-western vicinity of enclosure III, to a site which was recently shown to include a fourth enclosure.

The most notable find in this trench was constituted by a group of metal artefacts which had been dumped. The group included two bronze objects (a situla handle and the handle of an infundibulum) and numerous iron objects including; a key, a sword and scabbard, a bundle of javelins and two javelin points. This find can probably be linked to a military episode (82 B.C.) involving Volterra when the partisans of Marius clashed with those of Sulla. It is likely that on that occasion metal artefacts belonging to the sanctuary’s reserves were dispersed and looted.

A small kiln was found below the level of the deposit described above. Rectangular in plan with walls formed by bricks fixed into the ground, it dated to the second half of the 2nd century B.C. Together with other similar structures found in previous campaigns, the small kiln attests the production of ceramic objects, within the sphere of the sanctuary, probably for use by the devotees such as cooking jars, small balsamarii, torches for cult use. All this material was abundantly documented in both primary and secondary deposition within the sacred area.