Silver Islet sits on the southern edge of the Sibley Peninsula at the mouth of Thunder Bay. Nearby Sleeping Giant Provincial Park attracts outdoor enthusiasts year-round with its diverse wildlife and many miles of hiking trails that lead to spectacular views of the Canadian Shield landscape. Less than a mile from its shores are the remnants of an abandoned silver mine. Located 1,200 feet below Lake Superior, this unique underwater mine was the world’s largest and most valuable silver mine, producing the modern-day equivalent of $78 million before flooding in 1884.