Twenty of the parks 22 lakes are kettle lakes. These formations are the result of glacial activity some 11,000 years ago. As global temperatures warmed, the glacier that covered much of Ontario retreated, leaving chunks of ice, some as big as buildings, imbedded in the sandy soil. Eventually the ice melted and the lakes were formed. Kettle lakes have no inlets or outlets; their water comes from crystal clear springs. Most have steep, sandy banks and some are as deep as 30 metres.

The park is located in the transition zone between boreal forest and sub-arctic tundra, and a few hardy deciduous trees can be seen growing among the predominant evergreens, of which aspen, birch, spruce, fir and pine are most common. In the park's moister lowlands, sphagnum moss, leather-leaf, Labrador tea and the insect-devouring pitcher plant thrive beneath black spruce and tamarack.

The park is home to many mammals including moose, bear, timber wolf, lynx, fox and marten. Birds here include the great blue heron, pileated woodpecker, loon, herring gull, blue-winged teal and other water fowl.