VERTCRS["Hong_Kong_Geodetic_CS",
    VDATUM["Hong_Kong_Geodetic"],
    CS[vertical,1],
        AXIS["ellipsoidal height (h)",up,
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Not known."],
        AREA["China - Hong Kong - onshore and offshore."],
        BBOX[22.13,113.76,22.58,114.51]],
    ID["ESRI",115839]]