endataset SCAR Antarctic Digital Database ../Basemap/ADD_Rock_outcrop_medium_res_polygon.shp SCAR Antarctic Digital Database (ADD) Version 7.0. Downloaded 2016-2017 from: http://www.add.scar.org/ Seamless dataset for Antarctic rock outcrop, applicable to all zoom levels. A compendium of polygon data which shold display well at all zoom levels. High resolution data from ADD version 5 with minor consistency updates. For even higher resolution, enable the layer "ADD Rock outcrop (high, Landsat8)" in the Geology group, also located as a file in Quantarctica\Geology\ADD\ADD_RockOutcrops_Landsat8.shp Medium and low resolution data have generalisations of 100m and 1km respectively applied using ArcGIS. For more information, see ADD_General.txt in this folder.