VERTCRS["Black Sea height",
    VDATUM["Black Sea"],
    CS[vertical,1],
        AXIS["gravity-related height (H)",up,
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Topographic mapping."],
        AREA["Georgia - onshore."],
        BBOX[41.04,39.99,43.59,46.72]],
    ID["EPSG",5735]]