Stock Photo: Grate covering glass plate measuring rate of cracking in granite sea wall protecting harbour entrance, sea wall preventing sand encroachment from South Bull sandbank at Sandymount, Great South Wall, Dublin Port, Dublin Bay, Ireland, november

Stock Photo: 4421-39406 Grate covering glass plate measuring rate of cracking in granite sea wall protecting harbour entrance, sea wall preventing sand encroachment from South Bull sandbank at Sandymount, Great South Wall, Dublin Port, Dublin Bay, Ireland, november