Sangumburi Crater is a 100-metre-deep volcanic crater in central Jeju, designated Natural Monument #263 and notable as a flat-bottomed maar crater unique in Korea. A 600-metre boardwalk loop circles the rim, with views down into a self-contained ecosystem holding over 400 species of plants and animals and a microclimate that supports both temperate and subtropical vegetation. The surrounding plateau bursts with silver-grass plumes in autumn — among the most photographed Jeju Island scenes. A short, accessible Jeju stop for Muslim travellers, easy to pair with Bijarim and Manjanggul. Modest entry fee.
