The lakes Averno (Avernus), Lucrino (Lucrinus), Fusaro (Palus Acherusia), and Agnano are within this group, which has shown activity in historical times.
The lake of Avernus, as an entrance to the infernal regions, was sacred to her.
AVERNUS, a lake of Campania, Italy, about II m.
64) seem to have begun near Lake Avernus; indeed, according to one theory, the Grotta della Pace would be a portion of this canal.
Nero's scheme for the construction of a canal from Lake Avernus to Ostia would have restored the balance in its favour (though it certainly could not have been continuous all the way to Rome with the means of engineering then available).
Agrippa's first care was to provide a safe harbour for his ships, which he accomplished by cutting through the strips of land which separated the Lacus Lucrinus from the sea, thus forming an outer harbour; an inner one was also made by joining the lake Avernus to the Lucrinus (Dio Cassius xlviii.
As early as the 7th century, and probably before, the Romans practised a kind of oyster culture in Lake Avernus, which still survives to the present day in Lake Fusaro.
Farther west, on the coast, and provided with a convenient harbour, stands Pozzuoli (Puteoli), a city containing many Roman remains, but now chiefly remarkable for the large gunworks erected by Messrs Armstrong & Co.; and beyond it, round the Bay of Baiae, are Monte Nuovo, a hill thrown up in a single night in September 1538; the classic site of Baiae; the Lucrine Lake; Lake Avernus; the Lake of Fusaro (Acherusia Palus); the Elysian t Fields; and the port and promontory of Misenum.