VERTCRS["Fahud HD height",
    VDATUM["Fahud Height Datum"],
    CS[vertical,1],
        AXIS["gravity-related height (H)",up,
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Geodesy, engineering survey."],
        AREA["Oman - mainland onshore."],
        BBOX[16.59,51.99,26.42,59.91]],
    ID["EPSG",5725]]