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
Malinao Volcano Malinao Volcano Malinao is a volcano located in the Bicol Region of the Philippines. The stratovolcano has no historical eruption but displays strong fumarolic activity which is harnessed for generating electricity. Located on its slope is Tiwi Geothermal Power Plant, one of the first geothermal energy plant commissioned in the country. Malinao Volcano is situated between the provinces of Albay and Camarines Sur in the southeastern region of Luzon Island; about north-northwest of Mayon volcano, the most active volcano in the Philippines. The mountain is forested with an elevation of asl and a base diameter of . On the summit