Immobile Graffignano

The cluster lies in the inland tuff and farming country on the border between northern Lazio and southern Umbria, with low hills, fields and wooded patches around the Tiber valley. The Tiber is the main river of the area and runs a few kilometres east, with the Alviano reservoir nearby on the Umbrian side. This is close to the lower edge of the Viterbo volcanic district, with the Cimini and Volsini uplands within the wider surroundings rather than at the doorstep. The nearest town of size is Orvieto, which has a cathedral and a historic centre on a tuff cliff. The area is known for olive groves, hazelnuts, vineyards and small hill settlements built in local tuff.