Hawk Hollow has 5.6 miles of trails that meander through the preserve, connecting to trails in Mallard Lake and West Branch forest preserves and the Bartlett Park District trail system.

Enjoy off-leash fun with your four-legged friends at Hawk Hollow's 34-acre fully fenced off-leash dog area, which has separate areas for large and small dogs, but you need to carry proof of a valid Forest Preserve District permit for each dog you bring. The area is open during regular preserve hours; it is closed Tuesdays until 10 a.m. for routine maintenance. Visit Dogs in the Preserves for rules and permit info.

Fish for largemouth bass, bluegill, channel catfish and crappie at the 4-acre Muskrat Pond, which you can reach via a gravel path off Army Trail Road.

Anglers 16 or older who are not legally disabled must carry valid Illinois fishing licenses (inland trout stamps, too, if they're fishing for trout). Lake maps and regulations, including creel limits and minimum lengths, are on our Fishing page.