Hallasan Hallasan Hallasan is a shield volcano on Jeju Island of South Korea. It is the highest mountain in South Korea. The area around the mountain is a designated national park, the Hallasan National Park ("Hallasan Gungnip Gongwon"/한라산국립공원/). Hallasan is commonly considered to be one of the three main mountains of South Korea, along with Jirisan and Seoraksan. Hallasan is the highest mountain in South Korea and is worshipped by people because they think that gods and spirits live on it. Alternate English names for the mountain include Hanla Mountain or Mount Halla and older English sources refer to the peak
Sousaki volcano higher areas of the earth crust. So future activities are possible. The last eruption of this volcano was a side eruption which created new land in the Gulf of Megara, where there are major port and refinery facilities. Sousaki volcano Sousaki () is an extinct volcano and modern solfatara field in northeastern Corinthia, Greece, at the northwest end of the Aegean volcanic arc. The volcano was active 4.0 to 2.3 million years ago, during the Pliocene and early Quaternary periods of the Earth's geological history. There is still significant solfataric activity at this location. The volcano erupted dacite lava. The