VERTCRS["Poolbeg height (ft(Br36))",
    VDATUM["Poolbeg"],
    CS[vertical,1],
        AXIS["gravity-related height (H)",up,
            LENGTHUNIT["British foot (1936)",0.3048007491]],
    USAGE[
        SCOPE["Topographic mapping."],
        AREA["Ireland - onshore. United Kingdom (UK) - Northern Ireland (Ulster) - onshore."],
        BBOX[51.39,-10.56,55.43,-5.34]],
    ID["EPSG",5754]]