This is a shaded relief cached base map that is utilizing the most commonly used datasets that are publically available from the Government of the North West Territories and the Government of Canada. It has been rendered from 1:25,000,000 down to 1:1,000 scales. For metadata on Geo-Base WMS service data sets visit; http://www.geobase.ca/geobase/en/wms/index.html and the metadata link above.