1. Glacial Grooves

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Kelleys Island, OH

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Tanja N.

Glacial Grooves Geological Preserve are the most accessible and famous glacial grooves in the whole world. They were caused by movements of glaciers over limestone bedrocks from Canada into Ohio during period of several hundreds of thousands of years due to the long cycles of climate change. The place is very memorable and majestic. Unfortunately we chose the wrong weekend to cross to the Kelly's Island, since apparently all golf carts were rented early in the morning and we had to walk from the landing to the preserve took us 45min , but we were not the only ones). Still.. it was one of the kind experience.

Glacial grooves
Marissa C.

It's really amazing to see glacial grooves as well preserved and visible as the ones here on Kelley's Island! It is rightfully a National Natural Landmark. They've done a great job organizing signage and setting up a nice walkway around which you can get a lot of views and angles of the area. The signage shares information about the history, geology and nature of the area. Fractures and fossils are also visible. There is a small parking lot available.

Ryan C.

Absolutely worth the price of the ferry alone. The entire family enjoyed seeing these grooves. Everything else on the island is a bonus. Make sure you plan to stop here when visiting - you will be very glad you did.

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Ask the Community - Glacial Grooves

Review Highlights - Glacial Grooves

“Interestingly, they weren't made by the moving glaciers themselves, but from melting water flowing a mile beneath the glacier's surface, carving these channels in the limestone.”

Mentioned in 3 reviews

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Glacial Grooves - landmarks - Updated October 2026

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