Geological resources and
biome of Gotjawal forest to remember
Flora ▶ Je-ju-go-sa-ri-sam (Mankyua che ju- ense), Eu-reum-nan-cho (Cyrtosia septentrionalis), Sun-cha (Brasenia schreberi), Gae-jok -do-ri-pul (Asarum maculatum), Sae-kki-no-ru-gwi (Hepatica insularis), Gae-ga-si-na-mu (Quercus gilva), Bil-le-na-mu (Maesa japo- nica), Je-ju-mul-bu-chu (Isoetes jejuensis), Dae-heung-ran (Cymbidium macrorrhizum), Je-ju-sang-sa-hwa (Lycoris chejuensis), Sol- bi-na-mu (Maackia fauriei), Ga-si-ttal-gi (Ru -bus hongnoensis), Wang-cho-pi (Zanthoxy- lum coreanum) etc.
Fauna ▶ Pheasant, Mandarin Duck, White-backed Woodpecker, Black Paradise Flycat- cher, Jay, Great Tit, Brown-eared Bulbul, Japanese Bush Warbler, Japanese White-eye, White's Ground Thrush, Jeju Salamander, Oriental Fire-bellied Toad, Narrow-mouthed Toad, Korean Tiger Keelback Snake, Black-headed Snake, Red-tongue Viper Snake, Roe Deer etc.
Geological features ▶ Gotjawal forest has a unique geological feature called ‘poon-ghyeol’ or ‘sumgol’ which means a wind-hole or breathing-hole. As the air flows through the cracks that sustain a relatively constant temperature throughout the year, the wind-holes emit cool breeze in the summer and warm air in the winter, making it a perfect habitat for a variety of species of fern.
The Summer / Natural air-conditioner : Hot summer air blows through the vol- canic cracks and holes kept under the constant temperature before it comes out again in the open air as a cool breeze.
The Winter / Natural heater : Cold winter air blows through the volcanic cracks and holes kept under the constant temperature before it comes out again in the open void as a warm puff of air.