Keywords: Modoc Rock Shelter.jpg 66000328 38 3 45 N 90 3 49 W Historical markers at the w Modoc Rock Shelter located on the northeastern side of County Road 7 Bluff Road southeast of Prairie du Rocher Illinois Prairie du Rocher in Randolph County Illinois Randolph County Illinois United States The rockshelter is a major archaeological site and has accordingly been designated a National Historic Landmark It is also part of the French Colonial Historic District a historic districts in the United States historic district that is listed on the National Register of Historic Places Own 2012-09-08 User Nyttend Nyttend Archaeological sites in Illinois Archaic culture French Colonial Historic District Historical markers in Illinois National Historic Landmarks in Illinois Rock shelters in the United States Building-centered pictures by User Nyttend |