@our.adventure.tails: There’s a cave hiding in the Illinois woods… 👀 Tucked away in Franklin Creek State Natural Area, Whipple’s Cave is just one of the unique features waiting to be discovered! Between the wooded trails, flowing creeks, rock formations, and hidden cave, this park is such an unexpected place to explore in Illinois. 📍 Franklin Creek State Natural Area | Franklin Grove, IL 🥾Pioneer Pass Trail Save this one for your next Illinois hiking adventure! #IllinoisHiking #IllinoisStateParks #DogFriendlyHiking #HiddenGemsIllinois #OurAdventureTails