Bangseonmun is a natural bridge located in Hancheon Valley, Odeung-dong, Jeju. It was designated as a scenic spot on January 24, 2013. The Valley features not only arched rocks, but also rock formations created by erosion, which harmonize with the surrounding trees to create a gorgeous landscape. It has long been a favorite scenic spot for scholars and writers. Especially in spring, when azaleas and rhododendrons are in full bloom, Jeju's ministers and other officials would come here every year to enjoy the scenery. The rock walls around the place are dotted with more than 50 inscriptions from that time, making it highly valuable as a complex heritage site that preserves historical and cultural elements in addition to natural scenery. Bangseonmun means "the gate to the world of the gods" or "the ascent to Hallasan," the mountain where the gods live. It is also known as a stopping place. The legend of Bangseonmun is that a monk who was caught spying on the nymphs bathing here was taken to the Jade Emperor and turned into a white deer as punishment to protect Baekryokdam. Hancheon, where Bangseonmun is located, is the largest local river flowing through the northern mountains of Hallasan, and is a bedrock river with a bedrock channel. Rocky rivers have excellent erosion by runoff, so various erosion features such as boulders and ponds develop in the lower reaches. Bangseonmun refers to an arch-shaped rock that has been carved by erosion, and a large-scale arch formation is called a natural bridge. After being designated as a scenic spot, it has been visited by many tourists, but the risk of falling rocks in the valley has increased, so Jeju City recently conducted a safety diagnosis. As a result, a number of cracks were found in the bedrock of Bangseonmun and the condition was deemed to be serious, so it has been closed to visitors since the end of 2014. The Bangseonmun Valley has been hosting the Bangseonmun Festival every May since 2004, organized by the Ora Natural and Cultural Heritage Conservation Society.