The Umbria town of Orvieto sits atop a plateau of tufa rock—consolidated volcanic ash that we would call “tuff” in English. The rock was thrown from the large crater that is now Lake Bolsena, which we visited four days ago.
![Boar's head at Norcineria Dai Fratelli](https://tamelarich.com/wp-content/uploads/2017/03/Photo-Sep-28-5-35-03-AM-e1491342496478.jpg)
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