Entrance to the Grotto of Posillipo; n.d.; Brush and brown wash; over a red chalk counterproof with traces of black chalk. Framing lines in pen and brown ink.; 18 1/4 x 13 in. (46.4 x 33 cm); Drawings; After Hubert Robert (French; Paris 1733-1808 Paris); Anonymous; French; 18th century; Located on the route from Naples to Pozzuoli; the Grotto of Posillipo was a popular destination for travelers to Italy in the eighteenth century. Hubert Robert visited the site in 1760; on a trip he took with the abb?de Saint-Non (1727-1791)