North end of Division Street

These impressive natural earthworks were formed about 20,000 years ago by the movement of a massive glacier which covered this region of North America and moved steadily southward, grinding out these furrows in the unyielding limestone.

Though these are the most impressive natural wonders of their kind to be seen on the continent, there are a number of other glacial grooves on the Island. It is also to be noted that, through the quarry operations over the years, many other grooves were destroyed.

Markers at the site describe in detail how the grooves were formed as well as giving the history of the area when it was part of the quarrying operation.

   
From Kelleys Island, A Tour Guide