Note 1763 — BOOK III. AN ACCOUNT OF COUNTRIES, NATIONS, SEAS, TOWNS, HAVENS, MOUNTAINS, RIVERS, DISTANCES, AND PEOPLES WHO NOW EXIST OR FORMERLY EXISTED. INTRODUCTION.
John Bostock translation
The river Velinus, now Velino, rising in the Apennines, in the vicinity of Reate, overflowed its banks and formed several small lakes, the largest of which was called Lake Velinus, now Pie di Lugo or Lago, while a smaller one was called Lacus Reatinus, now Lago di Santa Susanna. In order to carry off these waters, a channel was cut through the rocks by Curius Dentatus, the conqueror of the Sabines, by means of which the waters of the Velinus were carried through a narrow gorge to a spot where they fall from a height of several hundred feet into the river Nar. This fall is now known as the Fall of Terni or the Cascade Delle Marmore.