10 Ancient Structures In Ontario Historians Can't Figure Out

Ontario is a million square kilometres of Precambrian rock, and most people think of it as a young place — farms, highways, cities. But carved into the granite and buried beneath the fields are things that don't fit that story. This video covers ten structures historians have been arguing about for years: a serpent-shaped burial mound containing trade goods from the Ohio River Valley, over 900 petroglyphs on a limestone slab that breathes warm air from underground, and a quarry site on Manitoulin Island where an archaeologist's dates were so inconvenient he lost his job. These aren't fringe theories or folklore — they're documented sites where the official answer is still "we don't know." Ontario's history doesn't start with Confederation. It goes much, much further back than that.