VERTCRS["LUREF",
    VDATUM["D_Luxembourg_Reference_Frame"],
    CS[vertical,1],
        AXIS["ellipsoidal height (h)",up,
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Not known."],
        AREA["Luxembourg."],
        BBOX[49.44,5.73,50.19,6.53]],
    ID["ESRI",115886]]