![](https://image.tmdb.org/t/p/w500/ggyL0HtuUuyGPmp0FCDxJ9oI2sk.jpg)
Mystery Caves Of Guangxi
Jan 01, 2012
45m
Documentary
Why is a small region of China home to an extraordinary number of giant holes containing vast, little explored subterranean forests? One professor is on a dangerous mission to find out.
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