Below New Seawall LR 51 – View of the limestone pavement below the new sea wall at Lyme Regis, Dorset, England, June 2017, showing natural patterns on the surface from a combination of different wearing and weathering processes including natural fracturing (physical erosion), shallow depressions where acid water is dissolving the limestone (chemical erosion), and bioerosion by limpets and burrowing worms.
Jessica's Nature Blog 