Jeju Itinerary Sanbangsan Mountain can be a bell-shaped lava mountain located within the Yongmeori coast. It is definitely not a mountain in the standard perception, but a mound of dried lava. Sangbangsan was fashioned some 700,000 or so years in the past and is the results of violent volcanic activity. https://romainx086bmw7.wikiexcerpt.com/user