COMPD_CS["CIGD11 + CBVD61 height (ft)", GEOGCS["CIGD11", DATUM["Cayman_Islands_Geodetic_Datum_2011", SPHEROID["GRS 1980",6378137,298.257222101, AUTHORITY["EPSG","7019"]], AUTHORITY["EPSG","1100"]], PRIMEM["Greenwich",0, AUTHORITY["EPSG","8901"]], UNIT["degree",0.0174532925199433, AUTHORITY["EPSG","9122"]], AUTHORITY["EPSG","6135"]], VERT_CS["CBVD61 height (ft)", VERT_DATUM["Cayman Brac Vertical Datum 1961",2005, AUTHORITY["EPSG","1099"]], UNIT["foot",0.3048, AUTHORITY["EPSG","9002"]], AXIS["Gravity-related height",UP], AUTHORITY["EPSG","6132"]], AUTHORITY["EPSG","9502"]]