The Kimberley Forest is located in southern Ontario’s Beaver Valley, at the southern tip of Georgian Bay. The Beaver River flows north across the base of the forest and through the valley, emptying into Georgian Bay in the town of Thornbury. It is a productive agricultural area, producing a significant portion of Canada’s apple crop. It also contains one of Ontario’s best-preserved hardwood swamp ecosystems. The Bruce Trail follows the perimeter of the valley passing several natural landmarks including Old Baldy, the Duncan Crevice Caves, and Eugenia Falls. The main towns in the valley are Flesherton, Kimberley, and Thornbury.

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The Beaver Valley formed over a period of many thousands of years as the Beaver River cut into the Niagara Escarpment. Today, the river continues to cut southward into the bedrock at Eugenia Falls. Gradual erosive processes have created a wedge-shaped valley with a width ranging from 30 meters (90 feet) at the south end to 13 kilometers (8 miles) at the north end.


While much of the valley is heavily cultivated, it also contains several well-preserved natural habitats and is home to a number of locally and globally rare species, notably American Hart’s-tongue fern (Asplenium scolopendrium var. americanum).

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