World A Wisconsin archaeologist was scuba diving for fun. She found a sunken 1,200-year-old canoe. November 9, 2021 Sophie Carson, Milwaukee Journal Sentinel Comments Off on A Wisconsin archaeologist was scuba diving for fun. She found a sunken 1,200-year-old canoe. A 1,200-year-old canoe lifted from bottom of Lake Mendota is the oldest fully intact watercraft in Wisconsin.