nsheffield Posted May 18, 2010 Share Posted May 18, 2010 Sheffield has tunnels underneath it yes. Most likely where old Cities used to be. But how deep do these Tunnels really go. Is it a mile or just what we see when poping our heads over the canal near Sheffield City Centre. Link to comment Share on other sites More sharing options...
hillsbro Posted May 18, 2010 Share Posted May 18, 2010 Ther's a relevant thread here.. Link to comment Share on other sites More sharing options...
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