Hallasan National Park
Hallasan, at 1,947 meters, is the highest mountain in South Korea, and its summit crater, Baengnokdam, holds a small lake after rain. Only two trails reach the summit: Seongpanak, the longer but gentler route, and Gwaneumsa, which is steeper and more scenic.
Whichever route you choose, start early, carry plenty of water, food and warm layers, and check the weather, since conditions at the top can be very different from the coast. In winter, crampons are essential on snowy trails.
Baengnokdam is the crater at the summit of Hallasan, the highest mountain in South Korea. Photo: Joshua0608, Wikimedia Commons, CC BY-SA 4.0