Designated and protected as Historic Site 134, Samgseonghyeol Shrine is known as the legendary birthplace of three demigods of Jejudo Island — Goeulla (Go), Yangeulna (Yang), and Bueulna (Bu). The 3 holes that they came out of can still be found at the site bearing the shape of the Chinese character 品. The place contains Samseongjeon, Samseongmun (license altar), Jeonsacheong (a place for sacrificial rite), and Sungbodang (Confucian academy) within a 33,833㎡ wide forest that has the 3 holes in the center. Every year on April 10th and October 10th, the descendants of the demigods hold a great religious ceremony called Chunchudaeje (religious ceremony in spring and fall) to glorify the gods. On December 10th, another religious ceremony called Geonsidaeje (annual ceremony) is held by the government of Jejudo Island. In this event, the governor serves as the Choheongwan, while local authorities serve as Aheongwan and Jongheongwan. The three holes have not been dampened by snow or rain so far and the trees around them almost seem to be bowing towards them. You can see the relics in the museum and the animation of the legend of Samseonghyeol Shrine in the multimedia room for free in four different languages.