This GIS dataset depicts the surficial geology of NTS map area 84O (permafrost polygon features). The data were created in geodatabase format and output for public distribution in shapefile format. The map was prepared by airphoto interpretation together with limited ground-truthing. The airphotos within Wood Buffalo National Park were flown in 1975 (scale 1:54,000). The airphotos from outside the park were flown in 1994 (scale 1:60,000).