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Seongsan Ilchulbong

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HISTORY

Seongsan Ilchulbong, also called ‘Sunrise Peak’, is an archetypal tuff cone formed by hydrovolcanic eruptions upon a shallow seabed about 5 thousand years ago. Situated on the eastern seaboard of Jeju Island and said to resemble a gigantic ancient castle, this tuff cone is 182 meters high, has a preserved bowl-like crater and also displays diverse inner structures resulting from the sea cliff. These features are considered to be of geologic worth, providing information on eruptive and depositional processes of hydromagmatic volcanoes worldwide as well as past volcanic activity of Seongsan Ilchulbong itself.

WHY THIS PLACE

Seongsan Ilchulbong Tuff Cone was formed by Surtseyan-type hydrovolcanic activity upon a shallow seabed about 5,000 years ago when the sea level was same as the present. Most volcanic cones or oreums (Jeju dialect for volcanic cones) were formed by piles of scoria cones which are created by Hawaiian eruptions or Strombolian eruptions. But Seongsan Ilchulbong Tuff Cone and a few other oreums on Jeju Island were hydromagmatic volcanoes which were made by piles of volcanic ash, the interaction of hot ascending magma and seawater or ground water. Seongsan Ilchulbong Tuff Cone is 182 meters high, and its crater is about 600 meters in diameter. It has a dip of strata up to 45 degrees and is 90 meters from sea level to the crater floor.

CURIOSITIES

It takes usually one hour to climb to the top and to go down, using stairs, for an admission fee. The area is open from 7:10 am to 7 pm in summer and 7:30 am to 6 pm in winter. There is also a luggage storage room before the entrance.

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MAP (CLICK TO ENTER)

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