Italian Peasant Boy, 1825-1826, Detalj 3, NG Washingto Jean-Baptiste-Camille Corot (1796-1875)

The picture has something of this: beach, sand, seashore, ocean, rock, water, texture, sea, abstract, desert, nature, cave.
Perhaps it’s a close up of a painting of a person’s feet with a shoe on the ground in front.