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A mother was enjoying a day at the beach recently with her 9-year-old son when the two of them unexpectedly stumbled upon a small piece of Midwestern history: a century-old shipwreck.

Hannah Damon, director of outreach and administration at Camp Amnicon Adventures and Retreats in South Range, Wisconsin, made the discovery while spending time with her son along the camp's sandy shoreline.

The shipwreck is the A.H. Pitz, a steam-powered tugboat built in 1923. It was abandoned in 1951.

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Although Damon had known about the sunken vessel for years, she had never actually seen it until unusually clear water gave her and her son a rare glimpse of its remains.

"We started seeing beams and cables and this massive pipe, and it was like, wait a minute, this is a shipwreck, this is a shipwreck," Damon told Fox News Digital on Thursday.

Hannah Damon, pictured at right, spotted the…