A backhoe operator digging a trench for a new water line accidentally uncovered some gravestones Thursday, leading to the discovery of an historic cemetery adjacent to Renken Road just off Illinois Route 159.

The digging was for the Fosterburg Water District, whose officials called the project engineers, who notified the Illinois Historic Preservation Agency. Dawn E. Cobb, an anthropologist in charge of preserving human skeletal remains, was called to the site to investigate.

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