VERTCRS["TWVD 2001 height",
    VDATUM["Taiwan Vertical Datum 2001"],
    CS[vertical,1],
        AXIS["gravity-related height (H)",up,
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Geodesy, engineering survey, topographic mapping."],
        AREA["Taiwan, Republic of China - onshore - Taiwan Island."],
        BBOX[21.87,119.99,25.34,122.06]],
    ID["EPSG",8904]]