VERTCRS["Gran Canaria height",
    VDATUM["Gran Canaria"],
    CS[vertical,1],
        AXIS["gravity-related height (H)",up,
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Geodesy, engineering survey, topographic mapping."],
        AREA["Spain - Canary Islands - Gran Canaria onshore."],
        BBOX[27.68,-15.88,28.23,-15.31]],
    ID["EPSG",9397]]