Dongsang Unjangsangyegok Valley is a valley located at the easternmost part of Wanju. Spanning approximately 9 kilometers, it combines Dongsanggyegok Valley and Unjangsangyegok Valley. With its picturesque valley and refreshing waterfalls, it attracts visitors from all over the country during the summer months for recreation. In autumn, the colorful foliage further enhances the joy of hiking.