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Kelleys Island glacial grooves

View on map:41.616208°N 82.706977°W

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Huge grooves along with smaller striations cut a pathway through the Devonian Columbus Limestone here.  The grooves extend for about 430 feet and are 35 feet wide by 15 feet deep and are a huge reminder of the Pleistocene glaciation that reached into Ohio.  .  

Description


Aerial photo of Kelleys Island, looking west

On the northern side, Kelleys Island State Park offers camping and protects the Glacial Grooves State Memorial and the North Shore Alvar State Nature Preserve. The glacial striations puts Kelleys in mild fame as inside are the largest and most easily accessible remains of glacial grooves in the world.

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