VERTCRS["EH2000 height",
    VDATUM["Estonian Height System 2000"],
    CS[vertical,1],
        AXIS["gravity-related height (H)",up,
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Geodesy, engineering survey, topographic mapping."],
        AREA["Estonia - onshore."],
        BBOX[57.52,21.74,59.75,28.2]],
    ID["EPSG",9663]]