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Turner circled Lake Albano and made sketches from several different points. This view shows the slopes on the southern shore of the lake and the town of Castel Gandolfo. The drawing is continued on the opposite sheet of the double-page spread, see folio 7 (D15307).
For a full discussion of Turner’s depictions of Lake Albano see folio 3 verso (D15301) and the general introduction to the sketchbook.