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Questions tagged [underground]

For questions dealing with things that happen beneath the surface of the planet or other celestial body, except for things that happen in water (use [underwater] for that).

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2answers
1k views

What are the best weapons and armour for fighting underground? [closed]

First off assume that the technology is roughly that of the High Medieval age circa 1100 AD. The combatants are assumed to be humans in this case adapted to life underground after around 3000 yrs of ...
0
votes
4answers
153 views

How would an underground society have wars? [closed]

Two underground dwarven races are fighting a war. Dwarfs usually live in mines, but they can also move on surface. One army of dwarfs also control giants. The upper ground terrain is made of mountains ...
11
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4answers
275 views

Could dwarves do without wood?

Wood has, historically, been used, and still is, to make a great variety of things. Indeed, this material has many qualities, the most relevant being: Commonplace: in most places in your typical ...
2
votes
1answer
78 views

How might clouds be produced in a large underground fantasy realm?

I'm attempting to give my fantasy world weather/clouds, (some might be light-producing to add to other light sources, so if there's a scientific way to do that, please give it to me). There are ...
3
votes
5answers
257 views

How to create a sunny atmosphere without an actual sun?

I have a large underground fantasy world which is only accessible through the Mariana Trench. I'd like to do a day/night cycle and have have a bright, sunny atmosphere part of the time, but I'm not ...
3
votes
4answers
128 views

Underground Atmosphere

I have a terrestrial planet that is similar to Mars in many ways, a desert-like surface, thin atmosphere, and inhospitable to large flora and fauna as we know it. This planet has ceased tectonic ...
7
votes
1answer
239 views

Can fiber optic cables be used to pipe sunlight into an underground bunker for growing plants?

One major problem with living underground is you lose all of that wonderful energy provided by the sun. This energy is useful for many things including growing plants for food. A window is effectively ...
7
votes
4answers
266 views

How is infra-vision any good?

Supposing a world like the Underdark, full of civilizations that developed and live their lives completely away from the light of the sun. In the typical D&D type setting, these creatures have ...
20
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15answers
7k views

How do dwarves defend their City-under-the-Mountain from a dragon?

The Kingdom of the Dwarves has been rich and prosperous since the days that the first Dwarf-father awoke in the roots of the mountain. In the uncounted ages since he rose, the depths of the mountain ...
2
votes
1answer
62 views

Anaerobic Fungal or Plant life

The Dark Warlock Susie has heard of a cave system with a lethal density of argon that is protecting a burgeoning monster population. In the interest of beefing up her security, Susie wants to recreate ...
11
votes
5answers
364 views

What would a medieval war against a subterranean race look like?

To round off the little series started by this and this, I figured that I should add this question. The setting: there is a race of underground people living beneath a human kingdom. To avoid the ...
7
votes
8answers
1k views

How would an underground city-kingdom re-capture its surface land?

My kingdom has 2 entrances in a hilly field by the ocean shore, comprising over 100 acres. The entrances are the size of a road and can carry carts up and down tunnels leading 12 stories underground ...
3
votes
3answers
238 views

What Foods are Possible for an Underground Society

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 ...
1
vote
3answers
205 views

How would an underground civilization that mines deal with mine tailings?

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 ...
12
votes
3answers
244 views

Where would a dense population of human beings live underground?

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 ...
28
votes
9answers
4k views

Biologically sound reason why underground dwelling Drow have dark skin? [duplicate]

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 ...
3
votes
2answers
151 views

Average Speed when Caving

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 ...
0
votes
3answers
145 views

Approximately how long would it take to walk up four hundred feet of stairs? [closed]

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. ...
7
votes
1answer
215 views

Climate of an underground world

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. ...
6
votes
7answers
1k views

Would any long-range communication exist if all buildings were destroyed?

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 ...
47
votes
12answers
10k views

How can Dwarves produce honey underground?

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 ...
4
votes
4answers
1k views

How much time would you have to build cities underground after a gamma ray burst?

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 ...
0
votes
7answers
401 views

How can an ultra-deep hole or canyon form naturally on an earth like world? [duplicate]

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 ...
4
votes
4answers
274 views

An underground city beneath another city?

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.
9
votes
3answers
360 views

How thick should the roof of a large cave be to safely build a city on top of it?

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'...
14
votes
9answers
5k views

How could a planet have zero surface caves?

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 ...
6
votes
3answers
1k views

How to live underground for 1000 years?

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 ...
5
votes
2answers
267 views

Creating a low gravity environment deep underground [duplicate]

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 ...
2
votes
7answers
342 views

How could an organization steal a dragon egg out from under its mother's nose?

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 ...
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vote
3answers
100 views

How could an airborne disease only survive undeground?

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 ...
5
votes
1answer
304 views

Farming underground

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 (...
15
votes
5answers
929 views

Considerations for a Dwarven Volcano City

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 ...
39
votes
8answers
6k views

Cartoon vs Real Life Bores?---(Pointy vs Flat kind)

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 ...
12
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3answers
2k views

How do underground civilizations effectively manage waste sanitation?

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 ...
4
votes
3answers
448 views

Could people live indefinitely in underground cities?

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 ...
6
votes
3answers
335 views

how will an underground city state work?

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 ...
7
votes
2answers
311 views

Can food be grown/raised underground in a sustainable way?

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 ...
4
votes
1answer
377 views

Underground City scenario: Unpredicted earthquake

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 ...
2
votes
3answers
211 views

Mine easily turned into underground nuclear shelter / city

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 ...
4
votes
4answers
217 views

Why might humans abandon the surface of their planet in favor of a subterranean existence?

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 ...
6
votes
6answers
847 views

How would my dwarves tell time underground?

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 ...
1
vote
3answers
253 views

Can Dungeon Monsters work together?

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 ...
2
votes
3answers
273 views

Different options for post-nuclear fallout societies

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 ...
43
votes
11answers
5k views

Migrating Dungeon Monsters / Why do monsters not leave the dungeons?

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 ...
3
votes
2answers
4k views

How does air circulate in deep underground network?

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 ...
12
votes
6answers
895 views

Could humans dig out a 20km tunnel through quartzite by hand?

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 ...
9
votes
7answers
2k views

Would a black population whiten over generations because of living underground?

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 ...
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votes
8answers
6k views

How could a human civilization have happened to live underground, in Antarctica?

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 ...
50
votes
11answers
12k views

What does the Minotaur eat?

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 ...
8
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2answers
8k views

How low underground could you go? [duplicate]

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,...