The Peterborough Petroglyphs are the largest collection of ancient rock carvings (petroglyphs) in all of North America, made up of over 900 images carved into crystalline limestone located near Peterborough in Ontario, Canada.
Proclaimed a National Historic Site of Canada in 1976, local indigenous people believe that this is an entrance into the spirit world and that the Spirits actually speak to them from this location. They call it Kinoomaagewaapkong, which translates to “the rocks that teach”.