Lying just below the surface of Manchester sits a complex network of underground tunnels.
Several kilometres of subterranean passageways and spaces stretch under large parts of the city centre and beyond.
These tunnels include the remnants of a tube station that never was, a communications bunker, air raid shelters, canals and even shops.
Author Keith Warrender has written two books on the subject, Underground Manchester and Below Manchester, and regularly gives talks on what is below the surface of Manchester.
Keith, who took the took the above pictures during his various trips below ground, said there is evidence of tunnels being used below the city for several hundred years.
He added: “It was something that interested me and I began to research the subject and started to…