Caligula s two boats built on Lake Nemi were raised in the 1930s but were burnt to cinders by Nazi troops in 1944, according to a report. A new theory has emerged in a forthcoming book.
Dario Del Bufalo, an Italian expert on ancient stone, was signing copies of his book, Prophyry , about the reddish-purple rock favored by Roman emperors when a man flipped to.