A courtyard near the Campo Vaccino in Rome

A counterproof of a drawing by Hubert Robert dated 1759 recently sold at auction (Christie’s, London, 5 July 2022, lot 53). Thanks to the autograph inscription on the drawing, the view can be identified as the interior courtyard in front of the Salpetriera in Rome, a warehouse used to store saltpetre, the black powder used for cannons, located near the Campo Vaccino.