Nemi, Lake (nā`mē), Latin Nemorensis lacus, small, picturesque crater lake, c.1 mi (1.6 km) long, in the Alban Hills, central Italy, SE of Rome. The sacred wood and the ruins of the celebrated temple of Diana Diana (dīăn`ə), in Roman religion, goddess of the moon, forests, animals, and women in childbirth.
..... Click the link for more information. are there. Two pleasure ships of the Roman emperor Caligula that were lying at the bottom of Lake Nemi for almost 2,000 years were raised (1930–31) from the lake after its level had been lowered c.70 ft (21 m). No valuables were found, but objects interesting from the artistic and technical point of view were recovered. During World War II the ships were destroyed (1944) by the retreating German forces.

Nemi, Lake

ancient Lacus Nemorensis

Crater lake in the Alban Hills, southeast of Rome, Italy. Its area is about 0.67 sq mi (1.7 sq km), and it is 110 ft (34 m) deep. Nearby were a temple and grove sacred to the goddess Diana. Two ships dating from the reign of Caligula were raised from the lake bottom in the 1920s but were burned by the retreating German army in 1944, toward the end of World War II.