Large cement pads, paved roads, 25 feet or more of grass between site, large open grass areas. Nice place, friendly staff, 50 miles from Chicago's downtown, a great location. Clean shower/bathrooms, the dump site is on the way out, they will add 25 dollars to your bill till you check out because it is run through the hotel administration as a incidentals, but they remove it when you leave.
Stayed here overnight. Nice park, typical freeway noise and some locust noise during the day, but it is a very nice place. Level gravel spots with lots of grassy area and minimul bugs. Definitely a good stopover place. My GPS would not take the address, but it is south side of the freeway at exit 126 then just east of the truck stop about a 1/4 mile. You can see the "CAMP" sign from the freeway.