Rogers City and the world's largest limestone quarry

Rogers City sits right on Lake Huron, and for more than a century its story has been written in limestone. Just southeast of town is the Calcite quarry — an open-pit limestone mine so vast it’s been called a man-made Grand Canyon, more than 150 feet deep and several miles across. It’s widely known as the largest limestone quarry in the world.

The limestone here is unusually pure, which makes it valuable for making steel, cement, and chemicals. The Michigan Limestone & Chemical Company opened the quarry in 1912 and built its own deep-water port, called Calcite, right at the water’s edge. Self-unloading freighters — a technology pioneered here — still carry the stone out to ports all across the Great Lakes. Today the quarry is run by Carmeuse, and it’s still the heartbeat of the local economy.

You can’t tour the pit itself, but there are a couple of fenced overlooks — one off the US-23 business route, another at Harbor View on Calcite Road — where you can watch the giant trucks and the freighters at work. Bring binoculars; the scale is hard to believe until you see it. For buyers, Rogers City offers small-town Lake Huron living with a working harbor and a deep sense of place.