Pocheon Auraji Pillow Lava (Hantangang River UNESCO Global Geopark)

Pillow lava is named for its shape resembling a round pillow, and 'Auraji' refers to the confluence where two or more watercourses meet. The Auraji Pillow Lava is rock formed when high-temperature lava flowed and rapidly cooled and solidified upon encountering cold water (Yeongpyeongcheon Stream). Pillow lava is rarely found on land and is mostly formed in water-rich seabeds.

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