Lucrīnus Lacus
Properly the inner part of the Sinus Cumanus or Puteolanus, a bay on the coast of Campania,
between the promontory Misenum and Puteoli, running a considerable way inland. But at a very
early period the Lucrine Lake was separated from the remainder of the bay by a dike eight
stadia in length, and thus assumed the character of an inland lake. Its waters still remained
salt, and were celebrated for their oyster beds. Behind the Lucrine Lake was another lake
called Lacus Avernus. In the time of Augustus,
Agrippa made a communication between Lake Avernus and the Lucrine Lake, and also between the
Lucrine Lake and the Sinus Cumanus, thus forming out of the three the celebrated Harbour. The
Lucrine Lake was filled up by a volcanic eruption in 1538, when a conical mountain rose in its
place, called Monte Nuovo.