Hallasan 1100 Highland is the high-altitude mountain plateau on Jeju's central peak, reached by the 1100-ro mountain road that crosses Hallasan National Park. A 1-kilometre wooden boardwalk loops through wetlands designated as a Ramsar-protected site (registered in 2009), with mountain larch, Korean fir, and grazing roe deer typically visible from the trail. The boardwalk is fully accessible — about 30–40 minutes round-trip — and stays open year-round, with snow and ice in winter and crimson maple in late October. A natural midpoint stop on a Hallasan day for Muslim travellers, with halal-friendly Jeju options like Cafe Jeju 901 a short drive down the same road.
