VERTCRS["PNG08 height",
    VDATUM["PNG08"],
    CS[vertical,1],
        AXIS["gravity-related height (H)",up,
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Geodesy."],
        AREA["Papua New Guinea - between 0°N and 12°S and 140°E and 158°E - onshore and offshore."],
        BBOX[-12,140,0.01,158.01]],
    ID["EPSG",7447]]