9 eerie underground tunnels and vaults in Edinburgh that have lain empty for years

With such an interesting history, it's no wonder that Edinburgh has a warren of tunnels and vaults hidden beneath it.
Picture: Edinburgh's tunnels and vaultsPicture: Edinburgh's tunnels and vaults
Picture: Edinburgh's tunnels and vaults

With some have become famous tourist destinations, others have been long forgotten and all have been left uninhabited for years.

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