VERTCRS["SLVD height",
    VDATUM["Sri Lanka Vertical Datum"],
    CS[vertical,1],
        AXIS["gravity-related height (H)",up,
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Geodesy, engineering survey, topographic mapping."],
        AREA["Sri Lanka - onshore."],
        BBOX[5.86,79.64,9.88,81.95]],
    ID["EPSG",5237]]