File Description: This "freezes" all lakes and rivers for winter flying and means they can be landed on with skis or wheels; it is meant for low level flying rather than high level jet flights. This edition is complete in itself and now really covers all of Canada and parts of the USA along the border, including large parts of Michigan, Wisconsin, Minnesota, North Dakota, and Montana. It is reversible with an "untick" in the FS scenery library. The revision is the addition of frozen sea in the area of Baffin Island (where I and Sid & Pete have recently posted all of the Baffin Island airfields) as I missed this area last time. Sorry about that. I have spent some time making sure that the sea and the inlets along the coast in the south do not get frozen too, and also some of the lakes that are close to the coast and rarely get cold enough to freeze over. The Great Lakes do not usually totally freeze, but this is an either ON or OFF modification and partial freezing cannot be convincingly simulated, so I went for total ice. Along the north shore I went for the peak of the winter with sea ice all the way to the permanent polar cap; this is not totally realistic as there is usually a partially open lead along the coast, but as with the Great Lakes...... It will work without Ultimate Terrain, but as UT is what gets all the lakes and rivers there and in the right place (except in the far north) it is obviously much improved with UT. The pics show Rockcliffe in the winter with the frozen Ottawa River for real and in FS for comparison; without UT the river would not be in the right place.