#explorer Sanbangsan Mountain is a trachytic tuff lava dome connected to the sedimentary layer of the Yongmeori Coast in the coast of Sagye-ri, Andeok-myeon. It is a bell-shaped tholoid that stands tall in the plains of southwest Jeju, allowing it to be seen from anywhere in the area. It is encircled by Ilju Road, which connects Moseulpo Port and Hwasun-ri. Well-maintained stairs are available so that tourists can climb up to Sanbanggulsa Grotto, which stands at the southern face of Namsa-myeon. If you wish to go up to the summit of Sanbangsan Mountain, you can use the trail behind Sanbangsan Mountain, which leads to Deoksu-ri, Yonghae-dong.