Black and white engraved plate depicting a grotto designed in a rustic style. In the middle is Neptune (the Roman god of freshwater and the sea) on a rock, pouring out water which descends onto the pavement through an arch. The side 'niches' are ornamented with a satyr and other grotesque figures. The grotto is surrounded by trees to the back and side. From the book 'Grotesque architecture' by William Wrighte