Hallasan National Park summit, there is a crater lake called “Baekrokdam.” Since the mountain has high altitude, there are a number of alpine plants and animals. 1800 kinds of plants, including 400 kinds of specimen plants and 50 kinds of special plants, are living in Hallasan. So the Jeju island is designated by Biosphere Reserve in 2002 and Hallasan National Park is one of the region of Jeju Bioshere. Hallasan National Park Hallasan National Park () is located in the province of Jeju-do, South Korea. It was designated as the 9th national park in 1970. It features the highest mountain in South Korea,
Wonchi (volcano) Wonchi (volcano) Wonchi is a volcano located west of Addis Ababa, Ethiopia. At above sea level, it is the highest volcano in Ethiopia, from Mount Dendi, Ethiopia's second highest volcano. Wonchi is located at equal distance between the towns of Ambo and Woliso. The volcano has a wide caldera, and a single crater lake, Wonchi lake, about below the rim of the volcano. Study of Wonchi's caldera is incomplete; initial findings show it could be as much as deep, and the lake itself could be as deep as . Besides Wonchi lake, the caldera also contains hot springs, waterfalls, valleys,