VERTCRS["Baltic 1957 depth",
    VDATUM["Baltic 1957"],
    CS[vertical,1],
        AXIS["depth (D)",down,
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Geodesy, engineering survey, topographic mapping."],
        AREA["Czechia; Slovakia."],
        BBOX[47.73,12.09,51.06,22.56]],
    ID["EPSG",8358]]