COMPD_CS["RGM23 + IGN 2023 Mayotte height",GEOGCS["RGM23",DATUM["Mayotte_Geodetic_Reference_Frame_2023",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],AUTHORITY["EPSG","1389"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","10671"]],VERT_CS["IGN 2023 Mayotte height",VERT_DATUM["IGN 2023 Mayotte",2005,AUTHORITY["EPSG","1443"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","11157"]],AUTHORITY["EPSG","11158"]]