VERTCRS["NN54 height",
    VDATUM["Norway Normal Null 1954"],
    CS[vertical,1],
        AXIS["gravity-related height (H)",up,
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Geodesy, engineering survey, topographic mapping."],
        AREA["Norway - onshore."],
        BBOX[57.9,4.39,71.24,31.32]],
    ID["EPSG",5776]]