11-10-2012, 23:27
definitely a good find, never seen those before.
It was half collapsed and took a bit of crawling so maybe it's fully collapsed now but it was off the right hand side of the 2 brick archways, it leads or did lead to a vertical passage with some steelwork and pipework at the top which would have been street/carpark level, I'll have a hunt for some pics.
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