History Main / TunnelNetwork

* The Groundhog in ''Film/{{Caddyshack}}'' has something like this.

* The sewers of New York in ''VideoGame/FreedomFighters'' are utilized by the American Resistance to move about underneath the eyes of the occupying Soviets. In game, manhole covers mark points where you can quicksave and/or return to base if you find you don't have the right tools for the job at the moment. The subway tunnels are used similarly later on in the game.

In ''WesternAnimation/{{Madagascar}}'', the penguins are introduced digging a tunnel to escape from the zoo. In the SpinOff ''WesternAnimation/ThePenguinsOfMadagascar'', it's revealed that they have a network of 15 escape tunnels, some of which lead to their command center.

* The bumptious Mayor on ''WesternAnimation/{{Pecola}}'' has a series of secret tunnels beneath the town which he uses to get himself out of tight spots (such as answering his constituents' probing questions).

* In ''Series/Stargirl2020'', the Injustice Society operate out of a series of tunnels running underneath Blue Valley.
In ''Series/LivAndMaddie'', Parker Rooney built a network of "Parker Tunnels" that go around the neighborhood and even to the high school. Parker's tunnel obsession became a serious problem in the Season 3 finale, because the house was on the brink of collapse. Thanks to Joey's blunder in closing the tunnels, it collapses.

* The Groundhog in ''Film/CaddyShack'' has something like this.

* ''ComicBook/WonderWoman1942'': Hypnota's villain lair is a whole series of interconnected {{Secret Underground Passage}}s, which makes it so that even if someone does find her lair they're likely to get lost once they get in.

* In ''Discworld/{{Thud}}'', the dwarfs have created a tunnel network under Ankh-Morpork, partly so they can look for the McGuffin without anyone noticing, and partly because it wouldn't occur to them ''not'' to dig underground to where they want to go. By the end of the book, the network has been seized by the Patrician, who seems to have plans for it, possibly involving propelled carriages of some kind. (It's mentioned that the basic dwarfish mine sign, indicating a mine entrance, is [[UsefulNotes/TheLondonUnderground a circle with a horizontal line through it]].)

* ''WebOriginal/HowToHero'' recommends building a tunnel network on your superhero hideout for quick getaways. (They also suggest recruiting a team of prairie dogs to help you do it.)

For its high tech equivalent, see PortalNetwork. Occasionally related to AbsurdlySpaciousSewer and PipeMaze. A SecretUndergroundPassage sometimes leads to this, but is technically a different trope. This refers specifically to a massive underground network of tunnels, not a single tunnel used for a singular purpose.

* On ''Series/HogansHeroes'' they had a network of tunnels under the camp, and leading out of camp.
** To the point that it was a miracle the entire camp didn't turn into a sudden sinkhole. At one point while [[ItMakesSenseInContext trying to move a snowman so the Gestapo won't find their tunnel entrance]], Hogan paces out to a spot, looks at his men, and says "I think this is about the only spot in camp we ''don't'' have a tunnel underneath."

* ''Series/BuffyTheVampireSlayer''. Sunnydale has fourteen million square miles of sewers that the vampire/demon population use to move around in daylight. It's implied that the [[ReallySevenHundredYearsOld long-lived]] Mayor of Sunnydale designed the town so demons and vampires would have easy access to victims.

* ''Literature/{{Boneshaker}}''. Seattle has a network of sealed tunnels because above-ground is infested by zombies and the DeadlyGas that creates them.

* ''Literature/{{Boneshaker}}''. A sealed tunnel network (adapted from the tunnels dug by the eponymous [[DrillTank Boneshaker]] and the (real-life) Seattle Catacombs) is used to travel about the city without the inhabitants encountering [[OurZombiesAreDifferent rotters]] or [[DeadlyGas needing a gas mask]].

* In ''Discworld/{{Thud}}'', the dwarfs have created a tunnel network under Ankh-Morpork, partly so they can look for the McGuffin without anyone noticing, and partly because it wouldn't occur to them ''not'' to dig underground to where they want to go. By the end of the book, the network has been seized by the Patrician, who seems to have plans for it, possibly involving propelled carriages of some kind. (It's mentioned that the basic dwarfish mine sign, indicating a mine entrance, is [[UsefulNotes/TheLondonU nderground a circle with a horizontal line through it]].)

* In ''VideoGame/Fallout3'', Washington D.C. is such a ruin that the best way to get around is by going through its subway stations - which isn't to say that the going is easy, considering the raiders, mutants and ghouls that haunt the partially-collapsed passages. The Taft Tunnels appear to be purpose-built to be these, leading out from the Pentagon.