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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).

7
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1answer
197 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
246 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 ...
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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
53 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
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5answers
318 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
214 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
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3answers
178 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
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3answers
235 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
143 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
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3answers
143 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
197 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
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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
9k 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
347 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
250 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
335 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
261 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
314 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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3answers
99 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
285 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
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5answers
852 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
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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
1k 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
430 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
318 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
287 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
370 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
202 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
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4answers
216 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
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6answers
774 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
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3answers
238 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
248 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
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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
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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
804 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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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
11k 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
7k 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,...
15
votes
6answers
3k views

Would a city underground in the desert make sense from a survival standpoint?

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 ...
13
votes
4answers
2k views

Dungeons in a Medieval fantasy

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 ...
5
votes
3answers
146 views

Underground Solar Interaction

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. ...
4
votes
3answers
533 views

Where would water come from in an underground colony?

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 ...
8
votes
3answers
338 views

Kingdom creation calculations

Ok, here is the deal... In my story, I am trying to create a small kingdom containing somewhere 1000-1500 people with a 30-70% female to male ratio & 10-90% children to adult ratio. It is an old ...
16
votes
5answers
382 views

Architectural encoding of maps

Picture a band of explorers deep underground in huge dwarven underground complex they have been exploring for what to most of them feels like an eternity. They come to hub like chamber with a dozen or ...