History Main / HollowWorld

** The spinoff comic ''Witchfinder'' has a malevolent spirit explicitly exploiting a group's beliefs in the Hollow Earth to feed off their collective life forces (and then their blood).
** The hollow Earth caves turn out to be more important as the different Hellboy series progress. In the end [[spoiler: they turn out to be the place humanity was destined to inhabit when the surface of the planet is destroyed.]]
** The story ''ComicBook/FrankensteinUnderground'' has FrankensteinsMonster getting stranded in the Hollow Earth, where he encounters the ruins of an attempt to colonize it by a group of Theosophist-style mystics, who were preparing for [[spoiler: the apocalyptic event mentioned above]]. Naturally, the place is crawling with really cool monsters. He ends up deciding to stay down there, where he can finally be left alone and be at peace with nature.

** ''Anime/DoraemonNobitasNewDinosaur'' have an underground dinosaur sanctuary accessible through a cavern entrance, leading to a lost world populated by multiple different types of dinosaurs, including the last pockets of Nobisauruses the gang have spent the entire film searching for. This hidden sanctuary turns out to be the result of a ChekhovsGun from earlier - when Doraemon and friends accidentally arrives in the Jurassic period instead of the Cretaceous era, and Nobita lose the Breeding Diorama gadget along the way, turns out the gadget continues expanding on it's own and when they reach the correct time, said gadget already became a hidden world of various dinosaurs.

The most known early example is Creator/JulesVerne's ''Literature/JourneyToTheCenterOfTheEarth'', although he likely drew from theories of his time. When science started to switch over to the modern view of Earth's composition the idea of the hollow earth became a DiscreditedTrope, but later generations of SpeculativeFiction writers [[{{Reconstruction}} took up the concept and revitalized it]], making it a staple of pulpy TwoFistedTales. SciFi works bring us hollow world concepts such as the DysonSphere, which is a HollowWorld [[UpToEleven taken to a solar system scale]], and other variations of [[ThatsNoMoon artificially constructed worlds]].

* One ''Manga/{{Doraemon}}'' comic centers around Nobita and Doraemon's discovery of a barren, hollow realm in the center of the Earth thanks to a gadget which warps any myth into reality in the eyes of its users. As you would expect from an adventurous kid and his multipurpose robot, the duo proceed to populate the space with life, including little clay people that rapidly form a fairly advanced civilization and eventually venerate the duo like gods.
* ''Anime/DoraemonNobitasDiaryOfTheCreationOfTheWorld'' have Nobita creating a brand new world of his own using a Universe Creation Kit, but after realizing his world doesn't have mammals in it, only bugs, asks for Doraemon to speed up its evolution process. This leads to the creation of humans' ancestors, with bugs on the othe rhand being forced underground and creating their ''own'' civilization, a Hollow underground city populated by sentient, human-sized insects.

* In ''Script/AHDotComTheSeries'', a Hollow Earth appears that combines [[ShoutOut Shout Outs]] and [[{{Homage}} homages]] to just about every Hollow Earth in fiction. It first appears in "Dinos and Nazis and Deroes, Oh My!" and, [[spoiler:in a TearJerker, is destroyed in "Harbingers"]].

** Deep Tolguth is a vault in its Underdark-analogue, complete with otherwise-extinct animals. It's more like a country-sized mini-world than an actual hollow planet, though; an ancient terrarium made by Sufficiently Advanced Elementals.

* The Fushigiboshi in ''Anime/TwinPrincessOfWonderPlanet'', which gives it its name (which translates to "Wonder Planet").
* Dr. Suzuki in ''Anime/TransformersCybertron'' believes the world is hollow, with a hole at the North Pole leading to the inside. She's wrong, but there is a big massive cavern full of ancient Decepticons.
* This is a main plot point in ''Anime/SpiderRiders''. Hunter finds the Inner-World in the very first episode.

* The setting for most of ''Anime/ChildrenWhoChaseLostVoices'' is Agartha, a massive underground world with a completely open sky. Any physical or geological impossibilities with this can seemingly be explained by the fact that ''God lives here''.
* ''Anime/{{Endride}}'' is set in Endora, a fantasy kingdom inside a hollow Earth. There is a large green crystal floating in the center that serves as their sun. And somehow there is an open green sky there.

* There's a ''{{ComicBook/BPRD}}'' story ''called'' "Hollow Earth". It features mutant cavemen and what looks like Nazi submarines. However, it's not quite a traditional version - it's more like there is a network of subterranean caves in various places around the world where said mutant cavemen (really former servitors of the ancient Hyperboreans) live, and most of the world seems to be largely as we know it aside from that. Agartha and similar legends from Theosophy and the Thule Society occasionally crop up in the broader ''ComicBook/{{Hellboy}}'' universe but the truth is generally rather off from what the Theosophists thought.

* In one issue of the Gold Key ''WesternAnimation/{{Underdog}}'' comic book of the 1970s, Underdog met many strange creatures, including a rock 'n' roll band, as he followed Simon Barsinister's drilling machine through the earth.
* In the MarvelUniverse, Saturn's moon Titan is this: barren on the outside, fully inhabited on the inside.
* In the miniseries ''Comicbook/BatmanOdyssey'', Batman travels BeneathTheEarth and finds it hollow and filled with dinosaurs, trolls, wizards, monsters, and so forth. [[http://en.wikipedia.org/wiki/Neal_Adams#Advocacy_of_Expanding_Earth_theory Neal Adams]] is on board with this idea.
* In ''[[ComicBook/TheMultiversity Society of Super-Heroes: Conquerors of the Counter-World #1]]'', Immortal Man mentions in passing that he just walked back from inside the Earth.
* ''Comicbook/AtomicRobo'' makes it very clear that the Earth is ''not'' hollow, because that would be scientifically impossible. However, there ''is'' an extensive, undetectable planet-wide cave network populated by an alien silicon-based ecosystem, created when debris from [[https://en.wikipedia.org/wiki/Theia_(planet) Theia]] was captured by Earth's gravity and sank into the crust billions of years ago. [[note]]An ''immortal magma worm'' was involved at some point. We don't really know how.[[/note]]

* The Earth is hollow in ''ComicBook/SuperDinosaur'' and houses a smaller one: Inner-Earth, which is inhabited by dinosaurs. [[spoiler:And the Reptiloids.]]

* Naboo in ''Film/ThePhantomMenace'' has a hollow core entirely filled with water.

* ''Symzonia: A Voyage of Discovery'' by "Captain Adam Seaborn" is a 1820 novel which espouses ideas of John Cleves Symmes, Jr. and one of the earliest literary examples. Its other claim to fame is that was among the sources which inspired short story ''MS. Found in a Bottle'' and novel ''Literature/TheNarrativeOfArthurGordonPymOfNantucket'' by Creator/EdgarAllanPoe.
* ''Literature/JourneyToTheCenterOfTheEarth'' implies that there is a second sun at the core of our own planet, meaning we live on the outside of such a sphere. At the time, before the discovery of radioactive elements, this was [[ScienceMarchesOn one of several speculated]] explanations for the Earth's internal heat.
* Creator/EdgarRiceBurroughs cemented the concept in pulp with Literature/{{Pellucidar}}, an internal world where he set several of his stories, including a notable crossover with Literature/{{Tarzan}} in ''Tarzan at Earth's Core''. He also wrote ''Literature/TheMoonMaid'', in which the first spacecraft from Earth to land on the Moon discovers that it is hollow, with a living internal world that can be reached by descending through certain craters.

%%* Creator/OlafStapledon's ''Literature/StarMaker''.
%%* Creator/RobertSilverberg's ''Across a Billion Years''.
%%* Colin Kapp's ''Cageworld'' series.
%%* Bob Shaw's ''Orbitsville''.
%%* ''Farthest Star''
* In ''Wall Around a Star'', the inhabitants mainly lived on the ''outside'' of the Sphere (or in the various layers of the Dyson Shell).
* The eponymous structures in George Zebrowski's ''Macrolife''.
* The John Gribbin novel ''Innervisions''. This is meant to be a shock ending to the book, except [[TrailersAlwaysSpoil the cover announces]] "The world was a sphere... and they were inside it!"
* In the sci-fi novel ''Literature/PrisonersOfPower'' by [[Creator/StrugatskyBrothers A. and B. Strugatsky]], the inhabitants of the planet Saraksh are convinced that they live on the inner surface of a spherical cavity, due to the unusual optical properties of its atmosphere (the horizon looks like it is '''above''' the observer).
* Due to a combination of its gravitic and atmospheric oddities, the world of [[http://en.wikipedia.org/wiki/Mesklin Mesklin]] in Creator/HalClement's hard sci fi classic ''Literature/MissionOfGravity'' was thought by its inhabitants to be bowl-shaped. They were incorrect (it was actually a very flattened spheroid).
* {{Hell}} in Creator/PhilipJoseFarmer's ''Inside Outside''. According to some characters, it used to be flat but changed as scientific knowledge advanced. [[spoiler:It's later revealed, however, that this is false and that hell is a space station.]]
* In the semi-sequel to ''Literature/TheTimeMachine'', called ''The Time Ships'' (by Creator/StephenBaxter), the time traveler returns to the future once again, but finds it changed. The Morlocks are now "good" in this future, and are also incredibly advanced, having engineered a [[DysonSphere hollow sphere]] around the Sun slightly inside Earth's orbit. Morlocks live on the outside of this hollow sphere in the dark, while the Eloi live on the sunlit inside of it.
* Also by Creator/StephenBaxter, a short story called "[[http://kasmana.people.cofc.edu/MATHFICT/mfview.php?callnumber=mf907 Shell]]" is set on a planet that has been ''folded in on itself'' in the fourth dimension. There is no sky -- people looking up see the other side of the planet curving over them, as if it's a shell. When one character uses a hot-air balloon to explore the other side, she witnesses the "shell" flatten out and then become curved normally, [[AlienGeometries while the land she just left curves into a shell over the sky]].
* In the ''Literature/ArtemisFowl'' series, the Fairies moved to inside the HollowEarth in recent times -- that or BeneathTheEarth depending on how you interpret it.
* Nehwon in Fritz Leiber's Literature/FafhrdAndTheGrayMouser stories is a concave hollow world.
* The interior of Onyx in ''Literature/HaloGhostsOfOnyx'' has a portal to one of these. Specifically, it's a [[{{Precursors}} Forerunner]] [[DysonSphere Shield World]].
* In one of Creator/IsaacAsimov's stories in the rather epic Robots/Empire/Foundation chronology, some of the inhabitants of Trantor believe the universe to be an infinite mass of earth and rock, punctuated by occasional life-bearing bubbles. It is worth noting that the truth is more along the lines of BeneathTheEarth, but only the (increasingly rare and alienated) scientific and technical elite still believe this, with the others believing such a belief to be a quite frankly bizarre conspiracy, the details of which I can't quite remember.
* In Robert Rankin's ''The Greatest Show Off Earth'', our world is [[spoiler:the inner layer of]] a hollow world (in a kind of matryoshka style). [[spoiler:The inhabitants of the outer layer are planning to plug up the holes at the poles because they are fed up with our pollution spilling out.]]

* ''Literature/MoreInformationThanYouRequire'' features a long section on the mole-manic societies dwelling within the hollow Earth, including a list of 700 mole-man names and countless allusions to many of the other works listed on this page.
* In the ''Literature/{{Tunnels}}'' series, the Earth's core is hollow and contains an Eden-like paradise called "The Garden of the Second Sun".
* The Franchise/IndianaJones novel ''Indiana Jones and the Hollow Earth'' is about [[ExactlyWhatItSaysOnTheTin this]]. More specifically, Indy discovers Ultima Thule (see "Real Life" examples below).
* ''Hollow Earth: The long and curious history of imagining strange lands, fantastical creatures, advanced civilizations, and marvelous machines below the Earth's surface'' by David Standish goes into detail on the fictions, theories, and wacky religions inspired by this trope, but even he doesn't bother listing all the stories based on this trope (it was, for example, quite popular in the 19th century to base utopian fiction inside a hollow earth).

* ''Literature/TheWhiteDarkness.'' A girl is dragged along by her eccentric uncle to find the entrance to the hollow earth in Antarctica. [[spoiler:He's wrong, and quite insane.]]
* The Shellworld(s) in Iain M. Banks's ''Literature/{{Matter}}'' is essentially a nesting-doll series of these, although all the inhabitants live on the "outside" of each shell. What's on the inside? Why, artificial stars, some of which roll across the sky and some of which are fixed.
* Creator/ThomasPynchon's ''Literature/AgainstTheDay'' seems to have this. [[MindScrew It's unclear]].

* Creator/UmbertoEco's novel ''Literature/FoucaultsPendulum'' pokes fun at this trope, together with many others commonly believed by conspiracy theorists.
* The [=BookWorld=] in the ''Literature/ThursdayNext'' series eventually reboots and turns into one of these in ''One Of Our Thursdays Is Missing''. Used to be the various books were essentially pocket worlds floating in space independently of each other, only connected by a library acting as a dimensional nexus of sorts, but they now occupy the surface of a hollow world, with the various subdivisions of literature -- Fiction, Poetry, Mythology, Non-Ficition, etcetera -- each occupying a single continent.
* A variant in Creator/NikolayNosov's children's book ''Dunno on the Moon'', where the Moon turns out to not only be hollow but actually housing a mini-Earth inside it. The only difference for the shorties (all people in the book series are shorties, small humans) living on the mini-Earth is that, at night, everything is dark. Some technobabble explains how they get any light at all during daytime (something about cosmic rays turning into visible light when passing through the Moon's crust). The Moon-shorties have no idea that they are living inside a planetoid, as they don't have rockets yet and, frankly, have no need to try to figure out how to get into space (being a thinly-veiled stand-in for Western capitalists, most Moon-shorties are greedy and corrupt and, as such, are uninterested in the advancement of their people; this is the first book where the concept of money is brought up, when an Earth-shortie goes to a restaurant and tries to leave without paying). Another big difference (that is actually a big plot-point) is that, while on regular Earth all fruits and vegetables are huge compared to the shorties (as it "bigger than the shorties" in some cases), all fruits and vegetable on the mini-Earth are in proportion to them. Thus, for those living on the mini-Earth, hunger is a real possibility. After explaining who he is to two Moon-shorties, Dunno tells them that their rocket on the Moon's surface is full of seeds of giant fruits and vegetables. The three of them try to market that idea and create a fund for building a rocket to get from mini-Earth to the Moon's surface and retrieve the seeds. Unfortunately, without "moonite" (an {{Expy}} of Creator/HGWells's cavorite) that can only be found on the Moon's surface, building a rocket is extremely difficult, as shown by the second expedition sent from Earth (the rocket is much smaller and most of it is devoted to fuel; the first rocket, equipped with "moonite" only needed a little bit of thrust and was luxurious by comparison).
* The iconic example from ''Literature/PerryRhodan'' would be Horror, a hollow world in six distinct layers that at least from the protagonists' perspective seemed to serve primarily as a planet-sized ''trap'' for unauthorized users of the recently-discovered intergalactic [[PortalNetwork matter transmitter network]] connecting at least the Milky Way and the Andromeda Galaxy (plus some outliers) at the time. The "Mobys" from later in the same arc probably also qualify by virtue of being largely sleeping large-moon-sized anorganic ''[[GeniusLoci lifeforms]]'' whose insides were frequently colonized by opportunistic aliens.
* In ''Literature/TheWorldAndThorinn'', there are many worlds within the Earth with the lower ones having less of a pull of gravity due to almost as much material being overhead as underfoot.

* ''Literature/TheFutureOfSupervillainy'' is a volume of ''Literature/TheSupervillainySaga'' that takes place in one of these. It is revealed their world has a HollowEarth full of dinosaurs, lost civilizations, and an eternally shining sun in the center of the Earth. It becomes a place where Gary is able to settle the refugees from a dead planet with the locals' permission.
* Creator/RichardSharpeShaver's scifi stories and related [[ConspiracyTheorist conspiracy theories]] revolved around a HollowEarth ruled by a race of malicious technocratic [[{{Morlocks}} Morlock]]-like creatures called "deros", who toy with humanity [[ForTheEvulz for their own cruel amusement]].

* The ''Series/BabylonFive'' station could technically be considered a "world" of this sort, but there's a reason for this. The station is a design called an O'Neill Cylinder. By rotating along the cylindrical axis, the reactive centrifugal inertia produced along the inner surface becomes an artificial gravity. It was the best way humanity had at the time for producing artificial gravity; they didn't gain access to alien-based gravity generator technology until after 2261 (season four).
* ''{{Series/Lexx}}'''s [[spoiler:planet Fire]] has an inner surface with inexplicable bright daylight and Earth-normal gravity. Given its supernatural nature, one can only shrug.
* In ''Series/{{Sanctuary}}'' it turns out that the Earth really is hollow, and populated by technologically-advanced humans and Abnormals who migrated underground in order to escape the vampires ruling the world in the past. And the only people that knew were [[spoiler:Jekyll and Hyde]].
* ''Series/DoctorWho'': The Fourth Doctor story "The Pirate Planet" gave this an interesting twist. Zanak was a gigantic hollow planet with [[MassTeleportation enormous transmat engines]] at its core. It could literally materialize around smaller planets and squeeze them of their wealth and energies.
* The ClockPunk opening sequence to ''Series/GameOfThrones'' takes place on at the very least a parabolic version of the world map of Westeros and Essos with an astrolabe floating above it functioning as both the sun and the TitleCard for the show.

* In ''Podcast/{{Jemjammer}}'' Kofuspace is a sphere (essentially a solar system) composed entirely of solid rock--or at least the rock-like material covering the outside of a sphere. Inside, every planet is actually a concave bubble inside the mass.

* ''TabletopGame/HollowEarthExpedition'' is all about this, using the fluidity of the pulp genre to meld the hollow earth with Thule, Atlantis, and prehistoric times, and any sort of lost civilization, and the whole thing is discovered on the cusp of UsefulNotes/WorldWarII. Hey, how else are you going to feed Nazis to dinosaurs?

* ''TabletopGame/GeniusTheTransgression'' has the Hollow Earth as one of its many bardos -- pocket realities created when established science is proven wrong. From the presence of things like "brontosaurs" and Piltdown Men, it's implied to also be a catch-all for [[ArtisticLicensePaleontology every paleontological blunder ever committed]]. It's also been recently taken over by [[StupidJetpackHitler Nazis]] -- to be precise, [[TheHeartless Manes]] (creatures and people created in the same way bardos when an established theory or philosophy is abandoned) formed at the end of [=WW2=] when the real Nazis were crushed and almost all faith in their ideology crumbled.

* ''TabletopGame/MagicTheGathering'': The plane of Mirrodin is hollow, and mostly metallic. There are five channels, called lacunae, through which one of the planes five suns emerged from the mana core. There are five lacunae, one for each color of mana, and one for each of Mirrodin's five suns.

* ''TabletopGame/TheDarkEye'': Downplayed with the discontinued world of Tharun, which was actually an alternate universe (with its own gods and celestial bodies) whose only gates were reached through deep caverns. So it felt like a hollow earth, although it wasn't.

* ''VideoGame/{{Terranigma}}'' has this at the beginning, and later the protagonist drops through a hole to find himself on the surface of Earth.
* ''VideoGame/SuperRobotWars'': The world of La Gias (only visited in the GaidenGame ''LordOfElemental'', but referenced throughout the series) is like this. Its specifically in the center of the Earth, but its more of a magical dimension.
* ''VideoGame/ShinMegamiTenseiIIINocturne'': At TheEndOfTheWorldAsWeKnowIt (roughly 30 minutes into the game), the city of [[TokyoIsTheCenterOfTheUniverse Tokyo]] becomes the new world, with the central "sun" waxing and waning every few days.

* ''VideoGame/StarFox'': Macbeth from the original game is stated to be a hollow planet, but in truth there ''is'' a core, albeit smaller than the crust that surrounds it. This makes a huge series of caverns that runs through the entire planet. Andross had plans to turn Macbeth into a massive base. The actual stage even takes place with the Arwings flying around inside the planet.
* ''VideoGame/TheSecretWorld'' features a transit network between the various locations across the world, built into the depths of the hollow earth; known as Agartha, said transportation is based around the roots of the WorldTree itself, and is attended to by a number of hulking [[{{Golem}} Golems]] and one eccentric Victorian stationmaster.

* ''VideoGame/TalesOfTheAbyss'': The end of the first arc shows that underneath Auldrant's surface lies the Qliphoth, a mass of toxic liquid where the only lands remaining are two small islands holding Yulia City and the Tower of Rem, respectively. It's revealed that the Outer Lands used to be part of the Qliphoth, but that they had been raised up aeons ago to escape the miasma. [[spoiler:And the Outer Lands are starting to crumble and fall, leading to the party having to lower the Outer Lands back down to prevent more casualties.]]
* ''VideoGame/DragonQuestIV'': The final area. Also used in ''VideoGame/DragonQuestIII'' [[spoiler:where one of the big plot twists is TheReveal that the first two games took place ''inside'' an alternate Earth]].

* ''Xardion'' has the Hollowsphere (Zikar), which is icy on the outside and jungle on the inside.
* In ''Franchise/{{Halo}}'', Forerunner shield worlds are this combined with DysonSphere. They were designed to shelter their inhabitants from the Flood.
* In ''VideoGame/TheDarksideDetective'', Dooley believes in several different Hollow Earth conspiracy theories simultaneously. It's not said whether any of them are actually true, but the general standard of the other conspiracy theories Dooley believes (e.g. "The government is a mass delusion caused by chemicals secretly put in the water supply by the government") suggests that it's unlikely.

* ''Webcomic/SchlockMercenary'' has the Buuthandi, built by the F'sherl-Ganni. Due to math they're rather more like spherical solar sails counterbalanced with living habitats (drastically reducing the living space compared to a standard Dyson Sphere -- only a few hundred thousand times Earth rather than millions), but allow them to tame an entire star as a source of energy and mass.

* ''Webcomic/AxeCop'' features a civilization of people living within the Moon rather than on its surface. The Moon Ninjas come from here.

* [[http://www.psypets.net/ PsyPets]] has this as part of its FramingDevice; you're a volunteer working for the Hollow Earth Research Group (HERG). However, "Hollow Earth" in this setting is not ''actually'' inside Earth; rather, it's just a ''name'' given to an alternate dimension because the researchers were reminded of the old myth. References to the actual "Hollow Earth" pop up sometimes, though.

* [[http://www.facstaff.bucknell.edu/dgriffin/Research/Griffin-HE_in_Science.pdf What Curiosity in the Structure: The Hollow Earth in Science]] by Duane Griffin, is a short historical paper surveying scientific thinking about the hollow earth up to the present day.

* In ''Literature/TheSalvationWar'', Heaven and Hell are both Hollow Worlds. This is partly due to the linguistic convention of saying that one is "on" earth but "in" hell or heaven. They have AlienGeometries in other ways as well; traveling in what appears to be a straight line on them results in a curved path.

%%* ''WesternAnimation/SpartakusAndTheSunBeneathTheSea'': The city of Arkadia and the other "strata".

** The [[http://en.wikipedia.org/wiki/Theosophical_Society Theosophical Society]] were believers - their philosophy held all religion to have some virtue, all races were equal and they would promote studies in science, philosophy and religion. Popular through the early 1900s.
** The [[http://en.wikipedia.org/wiki/Thule_Society Thule Society]] were less charitable - their beliefs influenced the Nazi doctrine of Aryan supremacy and Nazi mysticism.

* ''TabletopGame/{{Pathfinder}}'', as a nod to ''Pellucidar'', has Deep Tolguth, an inverted vault in its Underdark-analogue, complete with otherwise-extinct animals. It's more like a country-sized mini-world than an actual hollow planet, though; an ancient terrarium made by Sufficiently Advanced Elementals.

* In the ''WesternAnimation/IceAge'' film series there is an underworld which dinosaurs still roam, first seen in ''WesternAnimation/IceAge3DawnOfTheDinosaurs''.

* In ''WesternAnimation/InsideJob2021'', [[ConspiracyKitchenSink every conspiracy theory is true]] ''except'' FlatEarth, which was a bet by employees of the EvilInc running the world about the dumbest thing they could get people to believe. ''Instead'', the Earth is hollow with a [[PlantPerson race of sapient hallucinogenic mushrooms living inside of it]].

The most known early example is Creator/JulesVerne's ''Literature/JourneyToTheCenterOfTheEarth'', although he likely drew from theories of his time. When science started to switch over to the modern view of Earth's composition the idea of the hollow earth became a DiscreditedTrope, but later generations of SpeculativeFiction writers [[{{Reconstruction}} took up the concept and revitalized it]]. SciFi works bring us hollow world concepts such as the DysonSphere, which is a HollowWorld [[UpToEleven taken to a solar system scale]], and other variations of [[ThatsNoMoon artificially constructed worlds]].

** The theory is referenced in ''Film/KongSkullIsland'' by Houston Brooks as a possibility to the origins of {{kaiju}}. [[spoiler:Sure enough, Skull Island is located above some kind of fissure from which monsters like Skullcrawlers emerge from. They may not be implying the whole planet is hollow, only that there is a large enough space underneath Skull Island for a whole ecosystem of ancient monsters to survive in.]]

* In ''WesternAnimation/InsideJob'', [[ConspiracyKitchenSink every conspiracy theory is true]] ''except'' FlatEarth, which was a bet by employees of the EvilInc running the world about the dumbest thing they could get people to believe. ''Instead'', the Earth is hollow with a [[PlantPerson race of sapient hallucinogenic mushrooms living inside of it]].

* ''WesternAnimation/TheSimpsons'': In "[[Recap/TheSimpsonsS6E16BartVsAustralia Bart vs. Australia]]", the Hindu god Vishnu is seen in the center of a hollow Earth, apparently controlling the universe from there.

* In Creator/JohnCWright's ''[[Literature/TheGoldenOecumene The Golden Transcedence]]'', the agent of the Silent Oecumene claims that they live inside a black hole, which has been hollowed out and so exerts no gravitational pull on them.

[[folder:Videogames]]

* The theory is referenced in ''Film/KongSkullIsland'' by Houston Brooks as a possibility to the origins of {{kaiju}}. [[spoiler:Sure enough, Skull Island is located above some kind of fissure from which monsters like Skullcrawlers emerge from. They may not be implying the whole planet is hollow, only that there is a large enough space underneath Skull Island for a whole ecosystem of ancient monsters to survive in.]]

** Confirmed in ''Film/GodzillaKingOfTheMonsters2019'' when Godzilla can use the underwater tunnels (which have very high-speed currents running through them) to pass from one ocean to another in record time without those pesky continents getting in the way. One character explains it and references Brooks' theory.
** ''Film/GodzillaVsKong'' [[spoiler: confirms the existence of terrestrial Hollow Earth ecosystems as well, over which Kong reigns at the end of the movie. It also reveals that these zones are inaccessible to non-Titan surface dwellers by an inverted gravity barrier that requires specialized vehicles to cross.]]

Not to be confused with [[WebAnimation/HollowEarth Hollow Earth]] the series.

** Confirmed in ''Film/GodzillaKingOfTheMonsters2019'' when Godzilla can use the underwater ones (which have very high-speed currents running through them) to pass from one ocean to another in record time without those pesky continents getting in the way. One character explains it and references Brooks' theory.

* One ''Anime/{{Doraemon}}'' comic centers around Nobita and Doraemon's discovery of a barren, hollow realm in the center of the Earth thanks to a gadget which warps any myth into reality in the eyes of its users. As you would expect from an adventurous kid and his multipurpose robot, the duo proceed to populate the space with life, including little clay people that rapidly form a fairly advanced civilization and eventually venerate the duo like gods.