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Comments to #22
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1.
channax 7 year s ago
again ? ? ?
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2.
Cancamuso 7 year s ago
Check changbaishan in China
The Great Wall of China
The largest man-made structure in the world, the Great Wall of China has survived for over 2,000 years, but recent over-farming has led to nearly two-thirds of the wall being damaged or destroyed. The wall could be reduced to ruins by erosion in as little as 20 years.
