VERT_CS["GCVD54 height (ft)",
    VERT_DATUM["Grand Cayman Vertical Datum 1954",2005,
        AUTHORITY["EPSG","1097"]],
    UNIT["foot",0.3048,
        AUTHORITY["EPSG","9002"]],
    AXIS["Gravity-related height",UP],
    AUTHORITY["EPSG","6130"]]