VERTCRS["ODN height",
    VDATUM["Ordnance Datum Newlyn"],
    CS[vertical,1],
        AXIS["gravity-related height (H)",up,
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Geodesy, engineering survey."],
        AREA["United Kingdom (UK) - Great Britain onshore - England and Wales - mainland; Scotland - mainland and Inner Hebrides."],
        BBOX[49.93,-7.06,58.71,1.8]],
    ID["EPSG",5701]]