VERTCRS["Foula height",
    VDATUM["Foula"],
    CS[vertical,1],
        AXIS["gravity-related height (H)",up,
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Geodesy, engineering survey."],
        AREA["United Kingdom (UK) - Great Britain - Scotland - Foula onshore."],
        BBOX[60.06,-2.21,60.2,-1.95]],
    ID["EPSG",5743]]