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Someorioreum Volcanic Cone is located on Udo Island, about 3.8 kilometers from Seongsanhang Port. The cone rises 100 meters and offers fantastic views of the surrounding area. The name means "cow's head," and comes from the name of the island, said to resemble a cow lying down. The island is only accessible from Seongsanhang Port, and it takes about 15 minutes by ferry.