Gwangmyeong Cave HD

Gwangmyeong Cave is a man-made cave in Gwangmyeong, Gyeonggi Province, South Korea. It is located on the far southwestern outskirts of Seoul. Since 2011, it has been open to the public as a tourist attraction, with amenities like a theme park, aquarium, and winery available inside. It is 7.8 km long.
  • Depth: 275 m
  • Length: 7.8 km
  • Hangul: 광명동굴
  • Hanja: 光明洞窟
  • Revised Romanization: Gwangmyeong Donggul
  • McCune–Reischauer: Kwangmyŏng Tonggul

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Data from: en.wikipedia.org
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