COMPD_CS["DrukRef23 + Bhutan Vertical Datum 2022 height",GEOGCS["DrukRef23",DATUM["National_Reference_Frame_of_Bhutan_2023",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],AUTHORITY["EPSG","1448"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","11226"]],VERT_CS["Bhutan Vertical Datum 2022 height",VERT_DATUM["Bhutan Vertical Datum 2022",2005,AUTHORITY["EPSG","1451"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","11338"]],AUTHORITY["EPSG","11383"]]