Piagol Valley is located between Nogodan and Banya peak on Jirisan Mountain. It is named so because in the fall the leaves in the valley turn crimson red. It is also one of the ten most beautiful highlights of Jirisan Mountain. It is famous for its fall colors, but it is also a beautiful place to visit all year around. During the spring time, the royal azaleas cover the entire area, and in the summer the lush forest fills the valley. Its autumn leaves are famous enough to be used in promoting tourism in Korea, and during the winter, the snow-covered valley is also a majestic sight to behold.At the entrance to Piagol Valley, there is the largest temple in Jirisan Mountain, Yeongoksa temple, and other national level cultural treasures are found here. The valley is not steep and should be easy for anyone to reach. The path from the valley entrance to Samhongso is breathtaking. Samhong refers to three “hong”s (red) – Sanhong (mountain red), Suhong (water red), and Inhong (person red). Every year, the Piagol Autumn Leaves Festival is held here, and valley trail walk, local produce sales, and photo exhibitions, among other activities, are promoted during the festival.