An outcrop of the Benwood limestone of the Monongahela Group at an Ohio Power Company pit in Morgan County, Ohio. This area has shale, siltstone, mudstone, sandstone, limestone and coal lithologies. Bedrock is from the Pennsylvanian Geologic Period. The photograph was taken by Michael C. Hansen during the Great Lakes Section Society for Sedimentary Geology's Annual Field Trip in September 1979.