塔洞

This drawing in black chalk on a chalky grey-tinted paper shows Wilson's use of the stump (a roll of paper or soft leather cut to a blunt point at each end) to smudge and soften the black chalk. Wilson has applied subtle white chalk lines to the tops of the rocks and boats. Broader applications of white chalk in the sky, sea and rocks are slightly smudged, giving a sense of the moonlight falling over the scene. These highlights give luminosity to the drawing.