In the 1930s a stone quarry in St. Marys Ontario began to fill with spring water.
It became a natural “swimming hole” for the locals .
It is now the “ largest outdoor swimming pool” around.
In the 1930s a stone quarry in St. Marys Ontario began to fill with spring water.
It became a natural “swimming hole” for the locals .
It is now the “ largest outdoor swimming pool” around.
