The micromorphological analysis of undisturbed sediment samples from the intermediate ditch backfill of the archaeological site of Vetricella, collected during the last excavation campaign, has begun. The thin sections will be analyzed through the use of the petrographic microscope with transmitted light, provided by the Laboratory of Geoarchaeology at the Department of Physical Sciences, Earth and Environment – University of Siena (Fig.1-2). The results obtained will be subsequently associated with the geoarchaeological analyses already carried out and presented during this year.

The study of the sedimentary facies of the backfill and the shape of the ditch’s profle have highlighted a high level of engineering design and construction technique, results of a precise functional strategy. The new data will be fundamental to understand the depositional dynamics of the intermediate ditch backfill . In conclusion, the geoarchaeological analysis will allow us to have a more defined overral view of the post-depositional process formation of archaeological record of Vetricella.