An artificial hill on the outskirts for he historical center, Testaccio or Monte dei Cocci (hill of terracotta shards) is composed of over 53 million storage amphorae of the Roman period. It is estimated that an additional 13 million amphorae were used in building works, used for target practice by the Vatican artillery and looted over the course of the centuries. The deposit dates from the 1st BC through 3rd century AD and extends over a kilometer in diameter and is 54 meter