The excavation found under the floor of the second chamber is difficult to interpret, since it was modified over and over again in the course of the centuries.

Its shape is in fact typical of an Etruscan tomb bed, but the excavation in the middle [like a stone basin] and the side holes show that it might be transformed into a fulling device, used to make fabrics more compact and softer.

If this is actually the case, it would be the first find of its type in the medieval district of Orvieto and would confirm the contents of old documents in which mention is made of many fulling mills that once existed in this area.