I've gotten close to Jeju by tour bus, public bus strains, and driving a rental motor vehicle. There isn't any metro or practice program around the island, though there are actually ferries to your mainland & Udo. - Hallasan climbing - it seemed monotonous to me - primarily walking from https://hectord197e.blogdun.com/30774660/helping-the-others-realize-the-advantages-of-jeju-island-korea