VERTCRS["IGN 1989 (REUNION)",
    VDATUM["IGN 1989 (REUNION)"],
    CS[vertical,1],
        AXIS["gravity-related height (H)",up,
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["NATIONALE A CARACTERE LEGAL"],
        AREA["ILE DE LA REUNION"],
        BBOX[-21.42,55.17,-20.75,55.92]],
    ID["IGNF","REUN89"]]