1. Mt. Halla National Park (Designated on March 24, 1970. Area: 133 sq-km) Mt. Halla, an extinct volcano towering 1950m above sea level, is situated in the center of Cheju Island, Korea's southernmost island province widely famed for its magnificent scenic beauty and exotic dialect spoken by the residents. Its rugged terrain, rocks of fantastic shapes, more than 1,700 species of plants of the frigid, subtropical and tropical zones and a colorful variety of birds make the mountain park a Mecca for not only alpinists but also natural scientists. Shown in the stamp is Paengnokdam, a lake formed in the mountaintop crater measuring 500m across and 3km around. The name of the lake derives from a legendary folk tale that a group of fairies used to frequent there to drink dew called "Paengnok."