In land-locked Illinois, it's a very nice place to dive. They've sunk some fun things like a 727 jet, an ambulance, train car, bus... It's worth a trip, but I've found subsequent trips get boring quickly due to lack to marine life. The 1 exception is the huge paddle fish that swim around the quarry. They're definitely worth seeing. Facilities are nice and there are very few people in the quarry during the week (weekends tend to get flooded with OW divers).