VERTCRS["IGN 1987 (MARTINIQUE)",
    VDATUM["IGN 1987 (MARTINIQUE)"],
    CS[vertical,1],
        AXIS["gravity-related height (H)",up,
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["NATIONALE A CARACTERE LEGAL"],
        AREA["MARTINIQUE"],
        BBOX[14.27,-61.25,15,-60.75]],
    ID["IGNF","MART87"]]