VERTCRS["La Palma height",
    VDATUM["La Palma"],
    CS[vertical,1],
        AXIS["gravity-related height (H)",up,
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Geodesy, engineering survey, topographic mapping."],
        AREA["Spain - Canary Islands - La Palma onshore."],
        BBOX[28.4,-18.06,28.9,-17.66]],
    ID["EPSG",9400]]