Sanbangsan Mountain (507.2m above sea level), located on the east side of Dundeok-myeon, faces Udubongsan Mountain, where King Uijong of Goryeo resided, to the west. At the entrance of the mountain is the birthplace of Cheongma Yu Chi-hwan, a famous scholar of Korea, and Bohyeonsa Temple is located in the valley. holding it At the top of the mountain, two rocky peaks stand tall like brothers, showing off their majesty in all directions. These rocks continue along the ridge to the midsection of the mountain, protruding here and there, forming small rock peaks. The lower part is surrounded by a green pine forest, so when you look at this mountain, you can feel that Sanbangsan Mountain is Geoje's famous mountain. There are many azaleas such as azaleas, mountain azaleas, and azaleas around the top of the mountain, so it is famous for azalea flowers in spring.