The forests shown here are in areas that are now protected as nature reserves and represent old-growth forests in the Carolinian zone.
Carolinian forests are broad-leafed forests located in Southern Ontario near the Great Lakes of Ontario, Huron, and Erie.These broad-leafed trees include the black walnut, the blue ash, magnolia, rock elm, swamp white oak, the sycamore, and the silver maple.
(source: World Atlas)
Information on Ontario Old Growth Forests can be found in the publication “Ontario’s Old-Growth Forests; A Guidebook Complete with History, Ecology, and Maps. By Michael Henry and Peter Quinby. Fitzhenry and Whiteside Limited.