CORRECTION:

Manjang cave is beautiful. because Manjang cave, It is preserved and is beautiful and glittery in nature. The cave is very famous in Jeju Island. Long and very well because of a facility Its natural stone structure is very famous. I visit the manjang this cave as much as I want to. Because I want to feel the exact same nature. I have lived live in an artificial nature so I want to see a real cave like the Manjang Cave and not an artificial one.

Thank you, Wanda! :)