Hallasan National Park, dominated by the dormant volcano Mount Hallasan, is a popular destination on Jeju Island, South Korea. Hiking to the summit offers stunning panoramic views, with several trails available varying in difficulty and duration (ranging from 4-10 hours round trip). The park is generally accessible, though some trails may be challenging for those with mobility issues; check trail details beforehand. Solo hiking is common, but guided tours can enhance the experience with insights into the local flora, fauna, and geology. Seasonal restrictions may apply, especially during winter months due to snow and ice, so it's advisable to check conditions before visiting. Entrance to the park is relatively inexpensive, but transportation and food costs should be considered. Peak seasons (spring and fall) can be crowded, so visiting during off-peak times may provide a more serene experience. Booking trails in advance is required.