People used to live there all year. One women from my Photography group on facebook used to live there year round and her dad was a commercial fisherman. Her dad would take the kids in the boat in the morning to catch the school bus to school up the road on the main land. I think these are just summer cottages now. And yes it freezes most years enough to drive out there with your truck or car. Great place for ice fishing if you just want to walk out. Here is a pick of spring time two years ago. Last year it never froze enough for solid ice.
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