There are several million copies of the Koran gathered in sacks which are buried in tunnels under the Chilthern Mountains in Pakistan

Amazing and weird fact: 

Did You Know? There are several million copies of the Koran gathered in sacks which are buried in tunnels under the Chilthern Mountains in Pakistan.  Islam forbids the burning, destroying, or otherwise desecration of the Koran. - WTF Fun Fact

Source: https://www.bbc.co.uk/news/av/world-asia-43201622/the-tunnels-that-house-old-korans

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