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Liverpool Underground Drains Mapped by Robots

Special robots are uncovering the hidden history of Liverpool by exploring miles of underground drains. Miles of culverts were built as Liverpool grew rapidly in the 18th  and 19th centuries and thousands of  houses and business premises were  built,  to drain away surface water  that built up during rainfall. Some of the passages are big enough  to drive two cars down, but to explore  the smaller ones the team from 2020 Liverpool, who are carrying out the  work on behalf of the city council, have  to use a remote controlled car  mounted with a CCTV camera. Read More