I have a drain line to take water from my home air-conditioning system out to a drain .The problem, as so often happens, is that the line cuts right across my railroad area. The solution I came up was borrowed from Poe's "Purloined Letter". I decided to to hide the pipe by leaving it in plain sight but disguise it to look like a covered sluice.

 

       

 

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For a 17 page PDF file showing how this modular disguise was constructed, with pictures, and step by step instructions click on the link below.