Muljangori-Oreum

Muljangori-oreum wetland is a mountain crater lake formed at the volcanic crater, which is at 900m~937m above the sea level, 9km of the northeast side of Mt. Halla (1,950 m). The 628000m² lake provides water, which is not abundant on the island, to hawks, fairy pitas, black kites, Japanese lesser sparrow hawks, black paradise flycatchers and other rare animals

Characteristics

Muljangori-oreum is a parasitic cone formed by volcanic activities at the end of the third Cenozoic Era and exists only in Jeju island. Around Halla-san, about 370 parasitic cones are located and only about 30% of them has mountain craters. Oreum is mostly composed of water-permeable basalt, so it’s difficult to have a wet mountain crater lake on the top of Oreum.

The lake(Muljangori-oreum) 900m above the sea level maintains its surface water by the rainfall. During the dry season, most part of wetland becomes dry except the deepest hole in the south (about 50 m of water depth) and during the rainy season, most of it gets submerged under the water.

Organisms

Birds

• Peregrine falcon (Falco peregrinus)
• Fairy pitta (Pitta brachyura nympha)
• black kite (Milvus migrans)
• Japanese sparrowhawk (Accipiter gularis)
• Japanese paradise-flycatcher (Terpsiphone atrocaudata)
• obovata peony (Paeonia obovata).
• Black paradise flycatcher (Terpsiphone atrocaudata)
• Fabriciana nerippe (F:Papilionoidea)
• Lethocerus deyrollei (F: Belostomatidae).

Plants

• Japanese strawberry tree (Cornus kousa ),
• Painted Maple (Acer pictum subsp. monoi ),
• Juncus effusus
• Scripus triangulates,
• Persicaria hydropiper.

69 families, 136 genera, 181 species of flowering plants inhabits here