Photograph of the mouth of a cave. On the outside of the cave entrance, on the right, stand three men looking in.

Wilson together with his friend George Walker spent a day on Staffa. Sandy Macdonald rowed the pair there in his rowing boat. According to Walker, Wilson took twenty-four exposures of which 'twenty-three were perfect.' Both Walker and Macdonald may be included in the figures on the right to provide a sense of scale. Fingal's Cave is found within the Island of Staffa in the Inner Hebrides of Scotland. It is formed of hexagonal basalt columns, the same as can be found in the Giant's Causeway in Northern Ireland.