History of Grindstone City – Home to The Michigan Thumb’s First Industry

The accidental find of the Marshal Sandstone formation in Michigan’s Upper Thumb in 1834 gave rise to one of the areas first industries. Grindstone City became famous for its production of huge grinding wheels until a disruptive technology change slid the industry into obsolescence.

Discover Enchantment: 10 More Spectacular Day Trips in Michigan’s Thumb Region – Part Two

In Part One of our Michigan Day Trip Around the Thumb we traveled from Port Huron up the eastern shore of Lake Huron to the tip of the Thumb. Our starting point for the second half of our adventure is in Grindstone City. We will begin heading west along Saginaw Bay’s shore of sugar sand beaches and interesting coastal towns and villages. I hope you brought your bathing suit because this side of the Thumb offers some of the best swimming beaches in Michigan.