This park contains large lakes, sand deposits, wetlands and bedrock outcrops. There are sand plains and dunes along the shore and back shore of Cornwall Lake and scenic rocky islands in Colin Lake. Forests are jack pine and aspen. There are unique kettle wetlands north of Colin Lake. Preliminary field studies have documented rare plants on the unique south facing grasslands. Extensive sand and gravel outwash plains and wetland complexes provide habitat for provincially rare plants including lens-fruited sedge, knotted pearlwort and sunpine sedge. Provincially rare birds (mew gull and semipalmated plover) nest on Colin Lake. Bald eagle and osprey are also common.