Is winter camping a popular activity near Sault Ste. Marie?

While much in the city itself is open year-round and winter pursuits are popular, winter camping in northern Ontario is only really for hardcore campers, as temperatures can drop below -40°C. Plus, provincial parks and other campgrounds are mostly only open from May through October. Sault Ste. Marie is connected to the US city of the same name by a bridge border crossing.