Note 1316 — BOOK III. AN ACCOUNT OF COUNTRIES, NATIONS, SEAS, TOWNS, HAVENS, MOUNTAINS, RIVERS, DISTANCES, AND PEOPLES WHO NOW EXIST OR FORMERLY EXISTED. INTRODUCTION.

Probably the inner part of the Gulf of Cumæ or Puteoli, but separated from the remainder by an embankment eight stadia in length. It was famous for its oyster-beds. Behind it was the Lake Avernus, occupying the crater of an extinct volcano, and supposed by the Greeks to be the entrance to the Infernal Regions. Agrippa opened a communication with the Lucrine Lake to render Lake Avernus accessible to ships. The Lucrine Lake was filled up by a volcanic eruption in 1538, and a mountain rose in its place. The Lake Avernus is still called the Lago di Averno.