On Dongseo Trail sections 53–55 in Uljin, entry to the forest genetic resources protection area requires an advance Foresttrip reservation and a professional guide. Guided walks operate on Fridays, Saturdays and Sundays, covering one section a day. Be at the departure point by 9 a.m. Each eastbound or westbound route accepts up to 20 people per day, first come first served.
Eastbound, Friday covers section 53 from Sogwang 2-ri Shelter to Ducheon-ri Shelter; Saturday covers section 54 from Ducheon-ri to Hawon-ri Shelter; Sunday covers section 55 from Hawon-ri to the National Uljin Dongseo Trail Center. Westbound travel reverses this sequence. The official notice instructs hikers to book the shelter at the destination of their chosen section. An exception allows unguided walking from the trail center to Mangyangjeong within section 55. Bring food and water; smoking, cooking, flammable materials and plant collecting are forbidden in the forest. Check current entry restrictions and booking availability before travel.