- Open daily dawn to dusk
- Location: (Map It) 739 Division St. in Kelleys Island, Ohio
- Phone: 419-797-4025
- Web: Click here
Glacial Grooves Geological Preserve at Kelleys Island: Man quarried away many other grooves during the 20th century. Today, these 18,000 year-old glacial grooves are “protected” and measure 400 feet long, 35-feet wide and 10-feet deep. Visitors can get up close for a good view and pictures of the grooves from an observation stairway/walkway. There are also marine-fossil remains in the limestone bedrock dating nearly 400 million-years-old.