endataset SCAR Antarctic Digital Database ../Basemap/ADD_Lakes_medium_res_polygon.shp SCAR Antarctic Digital Database (ADD) Version 7.0. Downloaded 2016-2017 from: http://www.add.scar.org/ Seamless view of Antarctic lakes for all zoom levels. From ADD5 1998-2011. Very incomplete, and includes only surface lake features (not sub-glacial lakes). For more information, see ADD_General.txt in this folder.