We went to this attraction thinking that it would be an isolated section of disused sewer system but no. When you go down the steps into the tunnel your nose soon tells that it is in fact a working part of the sewage system.
The smell although definately drainy is not really too bad.
The self guided tour through a number of galleries within the sewage system is fascinating.
The equipment used in the day to day running of the system is shown and the methods of problem solving are demonstrated such as large wooden balls being floated in the sewage flow to swirl and pressurize it and prevent the sand in the water settling and blocking the pipes.
The tour is just above the rushing flow of a large main sewer carrying the daily waste of the city. some of the walkways are metal gratings above the rushing flow. Side branches also visible.
The tunnels also carry the pipework for drinking water and act as conduits for other services.
Information posters are provided throughout, although we felt that a guided tour would have added to the experience.
Not a job I would like, underground rushing water is a bit unnerving and going through a tunnel in a scraper boat would probably reduce me to a nervous wreck but a definate hats off to the workers who keep the system flowing.
If you ever wondered how the sewers work this is not to be missed.
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