By now, you are probably familiar with the story of Leavenworth and the strange, unexplained city lurking below the streets. If you are not, here is a small bit of information that we know:

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Spanning an incredible three city blocks and housing several abandoned store fronts and tunnels is the impressive, well-constructed city that is thought to date back to sometime in the 1800s. To get a better look into this underground world, check out this archive video from Kansas City’s KCTV5:

What do you think of this underground phenomenon? Do you have any theories as to what it used to be?

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