VERTCRS["NN2000 height",
    DYNAMIC[
        FRAMEEPOCH[2000]],
    VDATUM["Norway Normal Null 2000"],
    CS[vertical,1],
        AXIS["gravity-related height (H)",up,
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Geodesy, engineering survey."],
        AREA["Norway - onshore."],
        BBOX[57.9,4.39,71.24,31.32]],
    ID["EPSG",5941]]