Mysterious Underground Worlds. Secret tombs and mysterious objects.Video.
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Ancient myths and legends tell of several mysterious underground cities filled with secret chambers, passages shrines and tombs.
Many of these remarkable underground worlds remain shrouded in mystery because we have not been able to locate them yet.
There are also fascinating very old underground tunnels, caves and cities that have been discovered, but the history behind them remains unsolved because we have no idea who built them and for what purposes.
