View of the magnificent substructure built to reinforce the base of the mountainside, and to make the Appian Way more conveneint and less steep between the valley and the two opposing hills, tavola 27 from "Antichità d'Albano e di Castel Gandolfo Descritte ed incise da Giovambatista Piranesi" (Antiquities of Albano and of Castel Gandolfo described and etched by Giovambattista Piranesi)
Giovanni Battista Piranesi Italian
Not on view
This plate was added in a later edition, printed after 1769.