VERTCRS["HVRS71 height",
    VDATUM["Croatian Vertical Reference Datum 1971"],
    CS[vertical,1],
        AXIS["gravity-related height (H)",up,
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Geodesy, engineering survey, topographic mapping."],
        AREA["Croatia - onshore."],
        BBOX[42.34,13.43,46.54,19.43]],
    ID["EPSG",5610]]