Nightscape above Logas, Peroulades, Corfu The photo above features sedimentary layering at Logas Beach, Peroulades (northern Corfu Island), Greece. The landscape is brightened by the waxing, gibbous Moon and by a long exposure. The cliff strata here consist primarily of clay deposits with sand lenses separating the clay. At a number of locations along this beach, wind and waves have undercut the cliff face. Note the structures atop the cliff .