Agnano 阿尼亚诺
Agnano is a volcanic crater in Napoli, Italy, situated northwest of Naples in the Campi Flegrei region. It was popular among both Greeks and Romans, and was famed for its hot springs.
Lake Agnano formed in the Middle Ages, and this was drained in 1870 to increase arable land and reduce the habitat of the Anopheles mosquito, which carries the malaria parasite. The crater is now home to the Agnano hippodrome and a few hotels.