VERTCRS["RGM23",
    VDATUM["Mayotte_Geodetic_Reference_Frame_2023"],
    CS[vertical,1],
        AXIS["ellipsoidal height (h)",up,
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Not known."],
        AREA["Mayotte - onshore and offshore."],
        BBOX[-14.49,43.68,-11.33,46.7]],
    ID["ESRI",115939]]