VERTCRS["Martinique 1987 height",
    VDATUM["Martinique 1987"],
    CS[vertical,1],
        AXIS["gravity-related height (H)",up,
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Geodesy, engineering survey, topographic mapping."],
        AREA["Martinique - onshore."],
        BBOX[14.35,-61.29,14.93,-60.76]],
    ID["EPSG",5756]]