A Rocca di Papa: mountains hidden in the clouds, Pierre-Henri de Valenciennes, between 1775 and 1825

Sketch. Object Type: painting. Date: between 1775 and 1825. Dimensions: height: 16 cm (6.2 in) ; width: 29.5 cm (11.6 in). Medium: oil on paper and on board. Collection: Louvre Museum. Rocca di Papa im Dunst