A tunnel is an underground passageway, completely enclosed except for openings for ingress and egress, commonly at each end.

A tunnel may be for foot or vehicular road traffic, for rail traffic, or for a canal. Some tunnels are aqueducts to supply water for consumption or for hydroelectric stations or are sewers. Other uses include routing power or telecommunication cables, some are to permit wildlife such as European badgers to cross highways. Secret tunnels have given entrance to or escape from an area, such as the Cu Chi Tunnels or the smuggling tunnels in the Gaza Strip which connect it to Egypt. Some tunnels are not for transport at all but rather, are fortifications, for example Mittelwerk and Cheyenne Mountain.

In the United Kingdom, a pedestrian tunnel or other underpass beneath a road is called an underpass subway. In the United States that term now means an underground rapid transit system.

The central part of a rapid transit network is usually built in tunnels. Rail station platforms may be connected by pedestrian tunnels or by foot bridges.

John Foxx (born Dennis Leigh, 26 September 1948, Chorley, Lancashire, England) is an English singer, artist, photographer and teacher. He was the original lead singer of the band Ultravox before being replaced by Midge Ure, when he left to embark on a solo career in 1979. Primarily associated with electronic synthesizer music, he has also pursued a parallel career in graphic design and education.

Dennis Leigh, later and famously known as John Foxx, was born 26 September 1948, in Chorley, Lancashire. His father was a coal miner and pugilist, his mother a millworker. He attended St Mary’s Primary and St Augustine’s Secondary schools. During his youth in the 1960s he embraced the lifestyle of a mod and a hippy. He experimented with tape recorders and synthesisers while on a scholarship at the Royal College of Art in London.

His first band, formed whilst at art college in Preston, was called Woolly Fish.

Prior to 1973, he was singing and playing a 12 string guitar, and occasionally supported Stack Waddy in Manchester, from where he later moved to London in order to escape what he saw as a lack of musical stimulus.

Mark Reeder (born 5 January 1958) grew up in Manchester, England. He is a musician and record producer. At a young age, Reeder became interested in progressive rock and especially early electronic music. In his teens, he worked in a small Virgin Records store in Manchester city centre.

Reeder has been living and working in Berlin since 1978. He is also the founder and owner of the German electronic dance music label "MFS" and "Flesh". In 1991, Reeder discovered the teenage Paul van Dyk, guiding and paving his way to build up his now international DJ superstardom. Through books as Dave Haslam's "Adventures on the wheels of steel – The rise of the superstar djs" it is now clearly understood that Reeder initiated and successfully outlined Paul van Dyk's early career from 1991 until 1999, and through Reeder's respected status and extensive music industry contacts, van Dyk was able to climb the ladder to success and reach his current superstar status.

Reeder's career has spanned over three decades. He has been a participant and behind the scenes influence for many now famous artists, spread over a wide cross section of contemporary musical genres.