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St. Mary’s Quarry

People at quarry lake: swimming, waiting to jump off a high dive, and lounging on the grass.

Unknown date

Source: St. Marys Museum and Archives, Reg Near Collection

The St. Mary’s Quarry was a limestone quarry rehabilitated as an outdoor swimming and recreational area during the 1930s. It became a popular swimming area after the Second World War. The St. Mary’s Quarry is now deemed “Canada’s Largest Outdoor Freshwater Swimming Pool.” This image shows the water hole on a summer day.