National Hwangjeongsan Recreation Forest in Danyang lists two free activities: 'Stroll through the Emperor's Garden' and 'Rock-Flower Forest Treasure Hunt'. Both are approximately one-hour nature programs, running March–November except Tuesdays, in the 10:00–12:00 and 14:00–16:00 windows. The listed capacity is about 20, first-come first-served, and the program fee is free.
Check exact session start times, live capacity and weather changes with the operator. Address: 239-11 Hwangjeongsan-ro, Daegang-myeon, Danyang, Chungbuk; phone 043-421-0608. Forest entry, parking or lodging fees may be separate.