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62 underground questions.

The dwarves in my world are humans who starting digging caves in the Maumturks and Twelve Bens in Ireland during the Iron Age, and eventually connected the caves via tunnels rather than trudge across ...

I'm writing the story for a game I'm making. I've got an underground farm powered by artificial lights. I was wondering which crops would be best as a food source and for efficiency. I've done my own ...

This is based on the Silo by Hugh Howey. I don't have any spoilers here though. In that book (actually a collection of 5 novels), the characters live in an underground city, and some of them mine for ...

By that, I don’t mean what type of structures, I mean under which part of the Earth? It's an extremely densely populated nation. As densely populated as many major cities - think Hong Kong and more ...

The Drow from Dungeons and Dragons are a race of elves with dark skin and pale hair that live mainly underground. How could these elves develop such a coloration when they live underground, away from ...

I have some underground travel (walking/climbing) by humans that I need to calculate time for, so I am looking for some "baseline" to go by. As such, I'm trying to figure out the average speed of ...

Imagine a very deep mine. You have to carry a whole lot of precious ore (say thirty pounds worth) on your back. You don't have enough energy to run, and the high heat underground is getting to you. ...

How can an ultra-deep hole or canyon form naturally on an earth like world? By ultra-deep I’m thinking something like the Marianas Trench but on land and not filled with water. If it’s not possible ...

I am creating a board game that requires an underground cavern world, with huge pipes that pump air for the civilization living there. The underground region is at about 35-40 degrees north latitude. ...

Background : Consider a typical dungeon, which has weak monsters at the top and the lower you go, the stronger the enemies become. Some questions about dungeons have already been answered - why are ...

In a hypothetical situation where ALL man-made structures on earth are destroyed (including servers, cell towers, radio antennas, etc.) but anything existing underground or in space (satellites) would ...

I have often heard/read/watched in fantasy about dwarves drinking mead and lots of it. I recently learned that mead is made from honey which requires bees and flowers which require sunlight. I doubt ...

So the situation, for those who aren’t familiar, is that Earth is in trouble. Again. A gamma ray burst from a dying star somewhere close by (a couple hundred to a couple thousand ly) has grazed or ...

If the Earth's interior was not hot and liquid, how deep could we dig before the tunnels collapsed by the pressure or the air became too pressurized to be breathable? In other words: how deep can ...

How plausible would it be to build an entire underground city beneath another city? Would it be structurally sound? And I do mean an entire city, underground with skyscrapers holding up the ceiling.

Fullmetal Alchemist (2003) features a giant (and I mean stupidly big) cave under a large and busy metropolis. Nobody is aware of its existence, which means that at least since the city's founding (let'...

What could cause a planet to naturally have zero caverns with surface openings apart from small impact hollows in the sides of craters and crevices carved in cliffs? To be specific, zero large ...

Let's assume a human civilization have been living for centuries, nay millennia, in a very large cave, not too deep under Antarctica - deep enough not to freeze, but shallow enough not to die because ...

How could humans survive underground for centuries? People have built multiple underground facilities around the world to prepare for a catastrophe. Just to be careful they overcalculated their ...

Related: Could a Dwarven Civilization Exist? Background: A Dungeons and Dragons world (for all intents and purposes, Tolkein lore is close enough) in which a group of colonists far from home are ...

I am creating an earth like planet with similar gravity and size and a new material has been created that can withstand the extreme temperatures and pressures of the earth's core! (Some hand waving on ...

In my world, dragons must faithfully guard their nest during the entirety of the eggs' incubation period (ie. no food/smoke/potty breaks). The reason for this is because the eggs must be kept warm ...

What characteristics must be included in a tunnel under a large city that was created and inhabited by faeries. How can the fae connect to nature there? The Fae are separated from their 'otherworld' ...

So: We all know about the Labyrinth and the Minotaur. One is a maze of stone tunnels, and one is a half-man half-bull killing machine. It's reasonable to assume that the Minotaur requires a decent ...

Buildings are often build on the ground into the sky. Would it be conceivable if instead, we build down into the ground instead? We wouldn't have to worry about wind then. I think we could go farther ...

If an earthquake happens, will people underground be in more danger than people above ground or not? I can think of several pros and cons for each: Stay underground Pros: Minimum risk of ...

The orcs in my world are humans who have been infected by two different diseases: An airborne mutagen that permanently denatures their myostatin receptors, which prevents their muscles from being ...

Suppose the surface of earth is -349 Fahrenheit and survivors live deep underground dependent on geo-thermal energy. They do farming in tunnels. They have enough energy (heat, electricity), fresh air (...

Suppose a world has huge underground caverns, capable of supporting large agricultural societies (something like described in Our Hollow Earth). What technological level, or better yet specific ...

Yes, I know that this is quite a BORING question (get it ;) ), but I really DIG this kinda stuff (no really). If you have watch an action children's show or a cartoon of some kind, we have all seen ...

AKA what do underground civs do with their poop? Vast underground networks of caverns, tunnels and caves are a staple adventurers' playground in many classic tabletop RPGs. To make for entertaining ...

I was wondering if people could build a city of sorts underground, with artificially-lit greenhouses, electricity + water, ventilation, etc. (essentially, as similar to an above-ground city as ...

Imagine a dwarven city, a fairly backwater one, completely unlike the likes of Erebor or Moria. This one scrapes together barely, and is only as large as it needs to be, which is to say 5 feet tall ...

In my upcoming book, nuclear war broke out and the survivors were forced to live underground indefinitely. How would a subterranean city operate, especially in regards to accommodation, movement and ...

Is it possible to grow plants or raise animals underground, in a way that is enough for 1 person to survive and easy enough to maintain? Conditions: underground; without any on-going help from the ...

Could a Dwarven society as described by Tolkien mythology actually work? Dwarves for the purposes of this question are short, stout, bearded men and women who live primarily underground. They have a ...

This question is, like How long will it take to form a new dialect and language in underground steampunk London?, part of an experiment I'm conducting on Worldbuilding. I'm temporarily switching gears ...

For story reasons I'd like to have a mine which exploited part was turned in to a nuclear shelter, for the city built above. Later, the nuclear shelter was utilized effectively as an district of city ...

How could they keep track of the "Surface World Time?" Parameters: Very little contact with the surface world Phobia of "just go and check" It is needed to know when traders will descend They don't ...

In a future with great scientific advancements in architecture, engineering and science (where all three work together to create solutions to many problems that city planners, architects and civil ...

After asking why monsters do not leave the dungeons, it was explained that they required mana to survive which is scarce outside the dungeon. However what was puzzling for me, was the fact that the ...

Nuclear war escalates throughout the world, quickly enough to kill much of the world population, but slowly enough to allow groups to find shelter (say a period of a month). The fallout leaves much ...

I'm new to this site and thought the question should be short and to the point. But i feel that doesn't help the person who would like to answer my question. So let me elaborate. I'm a film maker and ...

This questions came to me after some discussion on my previous one about a civilization living under Antarctica. I somehow have the feeling this is a dumb question - sorry if it is -, however I can't ...

In the desert, the major factors of survival are water, food and temperature. I have a city in a desert where the first two are covered by a nearby river and agriculture from that river, but would it ...

How far underground, assuming we're talking about a secret underground "living area", could be hospitable for human life assuming you don't want to hit the mantle? Would there be a pressure difference,...

A large solar flare event ignites the atmosphere of Earth, but luckily, humans have been preparing for an event like this for some time. We have a fairly large shelter around 2.2 kilometers ...

Suppose the typical Medieval fantasy world with elves, humans, dragons, magic, politics, society, and the rest, such as is found in countless open-world games. Open-world games encourage the player to ...

I have a colony of humans living underground in man-made catacombs on another planet. They are, essentially, digging/blasting as they go; they did not create a complete underground city first and ...

In my WIP (webcomic in progress) mentioned in my other posts, there is an earth-originated colony based on an alien planet in a semi-post-apocalyptic society with limited technology and resources. ...

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