| caption = Sims Corner Eskers and Kames
Eskers are long, sinuous, snakelike ridges of sand and gravel that was deposited near the base of a melting glacier as water flowed in a subglacial stream. A prominent esker is visible along U. S. Route 23, north of Circleville. Portions of this esker are mined for sand and gravel.
[[Category:Natural History Glossary]]