Well Known Text
 
WKT Version 2
COMPOUNDCRS["CIGD11 + GCVD54 height (ft)",GEOGCRS["CIGD11",DATUM["Cayman Islands Geodetic Datum 2011",ELLIPSOID["GRS 1980",6378137,298.257222101,LENGTHUNIT["metre",1,ID["EPSG",9001]],ID["EPSG",7019]],ID["EPSG",1100]],CS[ellipsoidal,2,ID["EPSG",6422]],AXIS["Geodetic latitude (Lat)",north],AXIS["Geodetic longitude (Lon)",east],ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],ID["EPSG",6135]],VERTCRS["GCVD54 height (ft)",VDATUM["Grand Cayman Vertical Datum 1954",ID["EPSG",1097]],CS[vertical,1,ID["EPSG",1030]],AXIS["Gravity-related height (H)",up],LENGTHUNIT["foot",0.3048,ID["EPSG",9002]],GEOIDMODEL["CIGD11 to GCVD54 height (ft) (1)",ID["EPSG",6138]],ID["EPSG",6130]],ID["EPSG",9503]]