Voyageurs National Park is situated on the southern tip of what is known as the Canadian Shield, a gigantic dome of volcanic bedrock that forms the heart of the North American Continent. This bedrock dates from the birth of North America. Some 2.8 billion years ago, massive volcanoes erupted through this area and deposited layer after layer of ash and lava, building up the island landmasses. These island arc volcanoes collided forming still larger landmasses. Subsequent uplifting, folding, superheating along with tremendous pressure created igneous and metamorphic rock to form the present day granite and schist of the Kabetogama Peninsula. Eons of erosion then wore down these volcanic mountain ranges to the landscape you see today.