PROJCS["Voirol 1875 / Nord Algerie (ancienne)",
    GEOGCS["Voirol 1875",
        DATUM["Voirol_1875",
            SPHEROID["Clarke 1880 (IGN)",6378249.2,293.4660212936265,
                AUTHORITY["EPSG","7011"]],
            TOWGS84[-73,-247,227,0,0,0,0],
            AUTHORITY["EPSG","6304"]],
        PRIMEM["Greenwich",0,
            AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.0174532925199433,
            AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","4304"]],
    PROJECTION["Lambert_Conformal_Conic_1SP"],
    PARAMETER["latitude_of_origin",36],
    PARAMETER["central_meridian",2.7],
    PARAMETER["scale_factor",0.999625544],
    PARAMETER["false_easting",500000],
    PARAMETER["false_northing",300000],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    AXIS["X",EAST],
    AXIS["Y",NORTH],
    AUTHORITY["EPSG","30491"]]