I know I'm going to get shot down for this, but the tunnels were not a myth .. at least not totally.. I used to know one of the old music hall entertainers who worked around Blackpool (he's long since gone now, so I can't prove any of this) and he used to tell me about the tunnels that the entertainers used, to move from one theatre to another .. they maybe only connected 2 theatres together and probably aren't the mythical network of tunnels that people imagine, but from what he told me, they were real. I really wish I'd paid more attention to the things he told me and gone into more detail with him.