Rushbrook Provincial Park contains the provincially significant South Rushbrook Old Pine Natural Heritage Area (799 ha), straddling the Shakwa Road. This area contains the best representation of mature and old-growth red pine-white pine on an end moraine landform in this area. Several old white and red pine trees cored in August 2002 were 125-130 years old, while one tree was over 300 years old. There is also a 37 hectare stand of mature and old-growth yellow birch on the end moraine. Other tree species include white birch, black spruce, white spruce, balsam fir, white cedar, trembling aspen, Jack pine, red maple, and sugar maple.
Location: Approximately 54 kilometres north of the Town of Espanola and 27 kilometres west of Cartier, in close proximity to the Spanish River Valley Signature Site.
Park Facilities: There are no visitor facilities available.