This is what was referred to as a "Going" map. It is based on the geology of an area as well as the topography and is produced for those situations where off-road, overland routes might need to be taken by tanks and heavy vehicles. This map was originally held by the Department of Defence, and was acquired by the Laurier Military History Archive (LMH) from the Directorate of History and Heritage, Government of Canada, in the 1990s. Digitization and georeferencing of the map was performed at the University of Waterloo.