Dr. Maurizio Forte sent along these great photos of their archaeological discovery in Vulci. The discoveries stem from the work on the iiD project Dig@IT: Virtual Reality in Archaeology.
A very important Roman public building (1st century AD) covers an Etruscan well-cistern connected with a complex network of galleries, very likely designing the earliest Pre-Roman water system, revealed for the first time in Vulci and in Etruscan-Roman cities. The coin is of the emperor Domitian (81-96 AD).