View this artwork by appointment, at Tate Britain's Prints and Drawings Rooms
Turner has produced this drawing with the page turned horizontally. In this simple sketch he renders the undulations and furrows of the local topography in fluid line. A tower or fort-like structure is visible atop one of the hillsides. The diagonal trajectory of a jagged line can be seen meandering from the foot of the tower through to the bottom left of the page.