VERT_CS["DRUKREF_03",
    VERT_DATUM["D_Bhutan_National_Geodetic_Datum",2002,
        AUTHORITY["ESRI","from_geogdatum_EPSG_1058"]],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    AXIS["Ellipsoidal height",UP],
    AUTHORITY["ESRI","115711"]]