Hallasan National Park Hallasan National Park Hallasan National Park () is located in the province of Jeju-do, South Korea. It was designated as the 9th national park in 1970. It features the highest mountain in South Korea, the shield volcano Hallasan on Jeju Island. It was designated a UNESCO Biosphere Reserve in 2002, and a World Heritage Site in 2007. Hallasan National Park is managed by Jeju Special Self-Governing Province. It is the only out of 20 national parks that is not managed by the Korea National Park Service. Hallasan has 7 trails: Eorimok Trail (6.8 km), Yeongsil Trail (5.8 km), Seongpanak Trail
Newberry Volcano magma chamber under the large, cauldron-like caldera at its summit. This caldera has dimensions of and formed about 75,000 years ago. Newberry Volcano first formed about 600,000 years ago, and has since been built up by several thousand eruptions. About 500,000 years ago, Mount Newberry attained an elevation of . Multiple eruptions created the caldera, but the main caldera-forming event occurred around 75,000 years ago from a major explosive eruption. It formed the crater lakes and Paulina Peak, which is the highest point on the volcano, at . As a result of its caldera-forming eruption, Newberry has a horizontal profile,