Operated by Lafayette County, 120-acre Blackhawk Memorial County Park offers primitive camping sites, hiking trails, canoeing opportunities, and area fishing. Site of the annual Bloody Lake Rendezvous, this unique park may be the best-kept secret in the state. If you approach Blackhawk Memorial along Highway 81 east of Argyle, you won't even find a sign for the park. Even on summer weekends you can find a good campsite here, and just about all the campsites are worthy choices, located either along the Pecatonica River or its backwaters. The park has two boat landings, a handicapped-accessible pier, baseball field, portable toilets, a picnic area with shelter, and a playground.