VERT_CS["BGS2005",
    VERT_DATUM["Bulgaria_Geodetic_System_2005",2002,
        AUTHORITY["ESRI","from_geogdatum_EPSG_1167"]],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    AXIS["Ellipsoidal height",UP],
    AUTHORITY["ESRI","115806"]]