View this artwork by appointment, at Tate Britain's Prints and Drawings Rooms
In this sketch of Fingal’s Cave on the Isle of Staffa Turner depicts a 180-degree view as if in a convex mirror, showing both the mouth of the cave and the dark recesses of the back of the cave opposite within the same sketch. The cave mouth is at the left and the back of the cave is at the right. While the sketching is rapid and rather rough, Turner took care to distinguish between the different rock formations in the cave, drawing the columnar basalt of the walls with vertical lines and loops for the tops or bottoms of broken columns (top and bottom right), but using jagged, broken lines for the ceiling which has a less regular crystalline structure.
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After Joseph Mallord William Turner Fingal’s Cave, Staffa, engraved by Edward Goodall