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
Solimana (volcano) Lomas deposit was erupted between 1.56 and 1.26 million years ago. Solimana still features fumarolic activity within the caldera. Solimana (volcano) Solimana is a volcanic massif in the Andes of Peru, South America, that is approximately high. It is considered an extinct volcano that is part of the Central Volcanic Zone, one of the volcanic belts of the Andes. It features a caldera as well as traces of a sector collapse and subsequent erosion. The volcano is glaciated. It is situated in the Arequipa Region, Condesuyos Province, in the districts of Chichas and Salamanca, and in the La Unión Province,