GEOGCS["Unknown datum based upon the Indonesian National Spheroid",
    DATUM["Not_specified_based_on_Indonesian_National_Spheroid",
        SPHEROID["Indonesian National Spheroid",6378160,298.247,
            AUTHORITY["EPSG","7021"]],
        AUTHORITY["EPSG","6021"]],
    PRIMEM["Greenwich",0,
        AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.01745329251994328,
        AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4021"]]