This last spring Mark Wagner and Eraina Nossa of the Center for Archaeological Investigations prepared National Register of Historic Places (NRHP) nominations for five prehistoric rock art sites located on state and federal land within Illinois. We are happy to report that all five have been accepted and are now listed on the NRHP. CAI staff are currently working on five additional rock art site nominations, three prehistoric and two historic. The prehistoric sites include the Trestle Hollow … [Read more...] about Illinois National Register of Historic Places Nominations