Immersive Technologies for the remote fruition of an inaccessible archaeological complex: the site of Cento Camerelle in the Phlegraean Fields Archaeological Park .

The complex of the Cento Camerelle or Centum Cellae dating back to the first century A.D. is located in the Archaeological Park of the Phlegraean Fields; it is a partially explored system of cisterns that probably covered for water supply to the villa above. Upon initiating the survey operations, the documentation status of the site appeared to be lacking. Most available information was derived from speleological investigations, albeit not digitised, while an overall survey of the area was completely missing. Alongside the morphometric survey of the entire site, in-depth studies were carried out on specific sections of the complex in order to provide relevant data on the dimensional, material, and typological characteristics, as well as on the state of conservation of the structure itself. The choice was made to use technologies that would provide precise and implementable data for future projects, and that could be used to support the design of the site conservation and regeneration activities. The first acquisition phase concerned aerial photogrammetry, covering a large area of land to subsequently superimpose the hypogeum survey, which proved to be much more widespread than the building at the entrance to the site. The second phase employed Terrestrial Laser Scanning 3D (TLS) technology and specifically involved the site and the hypogeum. In conclusion, it is worth emphasising that this research activity constitutes an example of how the synergic operation of advanced surveying, representation, and data management techniques relating to cultural heritage can go beyond purely technical-scientific purposes to constitute, as a whole, an operational platform capable of combining the need for in-depth knowledge of the asset, with its broad and captivating dissemination.