An incredible adventure on the Nemi lake and its underground waterway.
Discover yet another example of the ancient Romans amazing hydraulic engineering capabilities and creativity. This tour takes you along an underground water way, beginning at the crater lake of Lake Nemi. Because of the advanced nature of the emissary, some believed that it was the work of aliens with futuristic machines but in reality, recent studies demonstrated that this technique was already used in the VI century AD in the realization of very important projects of the same size.See for yourself this impressive example of Roman ingenuity that dates back to 5th century BC.