Did you know that Ohio is home to the largest accessible glacial grooves in the world? Few people do. You can find them on Kelleys Island, and they’re a must-see if you get a chance to travel to the Lake Erie Islands. These otherworldly grooves are absolutely fascinating to see, as they’re definite proof of an important piece of Ohio, American, and world history. Take a peek at what you can expect at the Glacial Grooves on Kelleys Island in Ohio.

Measuring 400 feet long, 35 feet wide and 15 feet deep, the Glacial Grooves State Memorial on Kelleys Island attracts visitors from around the world.

RHal4D/Flickr This rare geological wonder alone is worth a day trip to this lesser-known island.

About 35,000 years ago, the grooves were formed by a slow-moving, massive glacier that created the Great Lakes and Lake Erie Islands.

James St. John/Flickr The best part? This fascinating landscape is free to visit and to view.

The glacial grooves didn’t become a popular attraction until 1972, after they were excavated to uncover them in their entirety.

Virginia Hill/Flickr Imagine stumbling upon these otherworldly rock formations. What would you think of such a discovery?

Today, you can explore the grooves from different perspectives via a winding series of steps and footbridges that loop around the upper rim of them.

James St. John/Flickr After you’ve explored South Bass Island and the charming town of Put-In-Bay, this beautiful island makes a quiet escape.

This national landmark is truly awe-inspiring. Make a trip to Kelleys Island to see this rare, geological phenomenon for yourself.

James St. John/Flickr

Have you ever been to Glacial Grooves on Kelleys Island in Ohio? If so, let us know what your experience was like!

RHal4D/Flickr

This rare geological wonder alone is worth a day trip to this lesser-known island.

James St. John/Flickr

The best part? This fascinating landscape is free to visit and to view.

Virginia Hill/Flickr

Imagine stumbling upon these otherworldly rock formations. What would you think of such a discovery?

James St. John/Flickr

After you’ve explored South Bass Island and the charming town of Put-In-Bay, this beautiful island makes a quiet escape.

And for more natural (and manmade) wonders in Ohio, check out our previous article: 12 Marvels In Ohio That Must Be Seen To Be Believed.

OnlyInYourState may earn compensation through affiliate links in this article.

Address: Glacial Grooves, 739 Division St, Kelleys Island, OH 43438, USA

The OIYS Visitor Center

Glacial Grooves On Ohio’s Kelleys Island January 08, 2021 Beth Price-Williams Which hidden gems in Ohio should I visit? Ohio is an amazing place to live. If you’re not sure what to do when you’ve got free time, you might want to start uncovering some of Ohio’s hidden gems – like Ravenwood Castle in New Plymouth. You might feel as though you’ve stepped into a fairy tale. Even better?  You can stay overnight in one of the enchanting cottages. The Healing Chapel in Coolville is one of those hidden gems you just have to see to believe. At 10 feet by 14 feet, it’s the tiniest chapel in Ohio. If you loved playing in treehouses as a kid, you’ll love sleeping overnight in one as an adult at The Mohicans in Glenmont. What are the coolest places in Ohio? You’ll find some of the world’s coolest places in Ohio. If you don’t already have a bucket list, you just might want to start one. To the top of that list, add Great Seal State Park. The lush park is oozing with history and an abundance of natural beauty. If you’ve always wanted to see the Golden Gate Bridge but haven’t been able to make it to the west coast, check out the Anthony Wayne Bridge in Toledo, which is reminiscent of the famous bridge. Great Serpent Mount in Adams County, Brandywine Falls, and the Wilds in Cumberland are all among the coolest spots you’ll definitely want to check out in Ohio. What are the most unique things to do in Ohio? You’ll find some of the most unique things to do in Ohio, things that you just can’t do anywhere else in the world – literally. There’s only one Rock and Roll Hall of Fame, for example, and that’s in Cleveland. Have you added it to your bucket list yet? Slip on your comfiest pair of shoes for a stroll along Court Avenue. America’s Longest Concrete Street dates back to 1891 and, not too far away, you’ll happen upon the 15-foot McKinley Street, the World’s Shortest Street. Did you know that Cedar Point Amusement Park is also the Roller Coaster Capital of the World? Yep, you can spend a whole day or even more riding all the coasters at the popular park.

The OIYS Visitor Center

Glacial Grooves On Ohio’s Kelleys Island

January 08, 2021

Beth Price-Williams

Which hidden gems in Ohio should I visit? Ohio is an amazing place to live. If you’re not sure what to do when you’ve got free time, you might want to start uncovering some of Ohio’s hidden gems – like Ravenwood Castle in New Plymouth. You might feel as though you’ve stepped into a fairy tale. Even better?  You can stay overnight in one of the enchanting cottages. The Healing Chapel in Coolville is one of those hidden gems you just have to see to believe. At 10 feet by 14 feet, it’s the tiniest chapel in Ohio. If you loved playing in treehouses as a kid, you’ll love sleeping overnight in one as an adult at The Mohicans in Glenmont. What are the coolest places in Ohio? You’ll find some of the world’s coolest places in Ohio. If you don’t already have a bucket list, you just might want to start one. To the top of that list, add Great Seal State Park. The lush park is oozing with history and an abundance of natural beauty. If you’ve always wanted to see the Golden Gate Bridge but haven’t been able to make it to the west coast, check out the Anthony Wayne Bridge in Toledo, which is reminiscent of the famous bridge. Great Serpent Mount in Adams County, Brandywine Falls, and the Wilds in Cumberland are all among the coolest spots you’ll definitely want to check out in Ohio. What are the most unique things to do in Ohio? You’ll find some of the most unique things to do in Ohio, things that you just can’t do anywhere else in the world – literally. There’s only one Rock and Roll Hall of Fame, for example, and that’s in Cleveland. Have you added it to your bucket list yet? Slip on your comfiest pair of shoes for a stroll along Court Avenue. America’s Longest Concrete Street dates back to 1891 and, not too far away, you’ll happen upon the 15-foot McKinley Street, the World’s Shortest Street. Did you know that Cedar Point Amusement Park is also the Roller Coaster Capital of the World? Yep, you can spend a whole day or even more riding all the coasters at the popular park.

The OIYS Visitor Center

The OIYS Visitor Center

Ohio is an amazing place to live. If you’re not sure what to do when you’ve got free time, you might want to start uncovering some of Ohio’s hidden gems – like Ravenwood Castle in New Plymouth. You might feel as though you’ve stepped into a fairy tale. Even better?  You can stay overnight in one of the enchanting cottages. The Healing Chapel in Coolville is one of those hidden gems you just have to see to believe. At 10 feet by 14 feet, it’s the tiniest chapel in Ohio. If you loved playing in treehouses as a kid, you’ll love sleeping overnight in one as an adult at The Mohicans in Glenmont.

What are the coolest places in Ohio?

You’ll find some of the world’s coolest places in Ohio. If you don’t already have a bucket list, you just might want to start one. To the top of that list, add Great Seal State Park. The lush park is oozing with history and an abundance of natural beauty. If you’ve always wanted to see the Golden Gate Bridge but haven’t been able to make it to the west coast, check out the Anthony Wayne Bridge in Toledo, which is reminiscent of the famous bridge. Great Serpent Mount in Adams County, Brandywine Falls, and the Wilds in Cumberland are all among the coolest spots you’ll definitely want to check out in Ohio.

What are the most unique things to do in Ohio?

You’ll find some of the most unique things to do in Ohio, things that you just can’t do anywhere else in the world – literally. There’s only one Rock and Roll Hall of Fame, for example, and that’s in Cleveland. Have you added it to your bucket list yet? Slip on your comfiest pair of shoes for a stroll along Court Avenue. America’s Longest Concrete Street dates back to 1891 and, not too far away, you’ll happen upon the 15-foot McKinley Street, the World’s Shortest Street. Did you know that Cedar Point Amusement Park is also the Roller Coaster Capital of the World? Yep, you can spend a whole day or even more riding all the coasters at the popular park.