Editing Tunnel (section)

=== Longest ===
{{Main|List of longest tunnels}}
[[File:Gotthard Base Tunnel.jpg|thumb|The Gotthard Base Tunnel is the first flat route through a major mountain range.]]
* The [[Thirlmere Aqueduct]] in [[North West England]], United Kingdom is sometimes considered the longest tunnel, of any type, in the world at {{convert|154|km|mi|abbr=on}}, though the aqueduct's tunnel section is not continuous.{{dubious|date=March 2014}}
* The [[Dahuofang Water Tunnel]] in [[China]], opened in 2009, is the third longest water tunnel in the world at {{cvt|85.3|km}} length. 
* The [[Gotthard Base Tunnel]] in [[Switzerland]], opened in 2016, is the longest and deepest railway tunnel in the world at {{cvt|57.1|km}} length and {{cvt|2450|m}} maximum depth below the [[Saint-Gotthard Massif|Gotthard Massif]]. It provides a [[NRLA|flat transit route]] between the North and South of Europe under the [[Swiss Alps]], at a maximum elevation of {{cvt|549|m}}. 
* The [[Seikan Tunnel]] in [[Japan]] connects the main island of [[Honshu]] with the northern island of [[Hokkaido]] by rail. It is {{convert|53.9|km|adj=on}} long, of which {{cvt|23.3|km}} are crossing the [[Tsugaru Strait]] undersea.
* The [[Channel Tunnel]] crosses the [[English Channel]] between [[France]] and the [[United Kingdom]]. It has a total length of {{cvt|50|km}}, of which {{cvt|39|km}} are the world's longest undersea tunnel section.
* The [[Lötschberg Base Tunnel]] in [[Switzerland]] was the longest land rail tunnel, with a length of {{cvt|34.5|km}}, from its inauguration in 2007 until the completion of the [[Gotthard Base Tunnel]] in 2016.
* The [[Lærdal Tunnel]] in Norway from [[Lærdal]] to [[Aurland]] is the world's longest road tunnel, intended for cars and similar vehicles, at {{convert|24.5|km|mi|abbr=on}}.
* The [[Zhongnanshan Tunnel]] in [[People's Republic of China]] opened in January 2007 is the world's second longest [[highway]] tunnel and the longest mountain road tunnel in Asia, at {{convert|18|km|mi|abbr=on}}.
<!-- construction not even started*The [[Ryfast]] road program in [[Stavanger]], Norway, includes the tunnel [[Solbakktunnelen]], which is scheduled to be opened within 2015. This tunnel will be {{convert|14|km|mi|abbr=on}} long, making it both the world's longest underwater road tunnel and longest underwater highway tunnel. The tunnel will have four driving lanes in total, and a speed limit of {{convert|90|km/h|mph|abbr=on|lk=on}}. -->
* The longest canal tunnel is the [[Rove Tunnel]] in France, over {{convert|7.12|km|mi|abbr=on}} long.