Hallasan National Park (9.6 km), Seokgulam Trail (1.5 km), Gwaneumsa Trail (8.7 km), Donnaeko Trail (7 km), and Eoseungsaengak Trail (1.3 km). The longest trail is Seongpanak Trail which takes about 4.5 hours. Hallasan comprises 153.112 km of the Jeju Island. It rises 1.950 m above the sea level which means the highest mountain in South Korea. This mountain was formed in the fourth Cenozoic era by outburst of volcano. It is mostly composed of basalts. It is extending east and west, and it has high and gradual descent. On the other hand, the south part of the mountain is steep. In the
Hallasan as Mount Auckland. Hallasan is written in North Korea in Chosungul as if it were "Hannasan" (한나산); however, it is still pronounced as "Hallasan". In the past, Hallasan has been known by numerous other names in Korean including "Buak" (부악/), "Wonsan" (원산/), "Jinsan" (진산/), "Seonsan" (선산/), "Dumuak" (두무악/), "Burasan" (부라산/), "Yeongjusan" 영주산(), and "Hyeolmangbong" (혈망봉/). Every name of Hallasan has meanings and legends. "Han" represents the universe, and "la" means "pull". Both words mean that the mountain is high enough to pull the universe. According to the old legend, if anyone were to climb up the mountain, see a star