VERTCRS["HTRS96",
    VDATUM["D_Croatian_Terrestrial_Reference_System"],
    CS[vertical,1],
        AXIS["ellipsoidal height (h)",up,
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Not known."],
        AREA["Croatia - onshore and offshore."],
        BBOX[41.62,13,46.54,19.43]],
    ID["ESRI",115891]]