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Questions tagged [geography]

For questions about the characteristics and effects of natural features on a world.

3
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3answers
478 views

What vegetation/biome could I expect in a tropical region at an average temperature of 8-9 degrees Celsius?

So, my climates are extreme due to a 31.1 degree axial tilt. The maps provided show a climate classification system based on prevailing winds and elevation. Based on Reddit user u/shagomir's Planet ...
1
vote
2answers
556 views

corrected projections: Is this world map realistic? I tried to use plate tectonics to inform my mountain and island chain placements

1 degree of latitude = 96.57 km. Equirectangular projections. (Yes, I need to revise the polar regions to make sure they don't get squished.) Obliquity of Jasmi: +31.1 degrees. Radius of Jasmi: 0....
48
votes
12answers
7k views

How would you know your floating island was losing altitude?

The question: What realistic environmental signs would telegraph to the occupants of a floating landmass that their home was slowly losing altitude? The planet: I'm working on a story that takes ...
18
votes
5answers
2k views

Understanding which materials can be found on planets

I am making a science fiction computer game where you can travel between planets. I would like the planets all to have some kind of differing materials. Now I have no idea about which kind of "...
3
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6answers
244 views

How can I ensure that a supercontinent has fertile ground away from coastal areas?

In this world, the continents never split off from each other. They stayed connected into the one giant landmass called Pangea. Humanity developed on this supercontinent, separated by landmarks ...
3
votes
3answers
197 views

30km deep canyon in Central Europe

Let’s suppose that there is a canyon, several hundred kilometers in length, stretching from Leipzig to Geneva and reaching the depth of 30 kilometers. It is up to 60 kilometers wide, cutting through ...
6
votes
4answers
136 views

What would be some differences in the environment if the sun were always at the same point in the sky?

My fantasy world consists of a flat plane, with the sun affixed to a point directly over the main continent. This sun powers down to create night conditions, and then powers up again in the morning. ...
4
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2answers
298 views

Could I get some guidance on this map in progress?

BACKGROUND So I was working on a map, when I suddenly realized that despite the many helpful tutorials on this site I have very little idea what I'm doing. I thought it might be a good idea to put on ...
7
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4answers
136 views

Boiling Sea Between Volcanoes

In my world there is a chain of offshore volcanoes which are the result of a smaller plate hitting a larger one. There are two to three active volcanoes, my question is that two of these volcanoes are ...
13
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5answers
423 views

Where to Keep Your Dinosaur?

Let's say I'm a secretive organization who's recently come into possession of two individuals of the genus, Giraffatitan (a sauropod similar to the more famous Brachiosaurus for those unfamiliar with ...
9
votes
5answers
240 views

Could a permanent storm system circle a planet's equatorial zone?

I'm thinking of using this as a method of separating a planet's technological and cultural evolution, then having a sudden clash as the more advanced one becoming able to cross the storm belt. This ...
0
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1answer
71 views

Questions related to a newly created landmass [closed]

As a continuation for my previous island I decided to work on it some more. I've got something I quite like, but once more I'm overwhelmed by the questions that arise. This is my freshly created ...
1
vote
2answers
237 views

Is this landmass somewhat realistic?

Hello everyone, I finally forced myself to sit and draw a landmass. Is pic-related a somewhat realistic representation of a landmass? The dot is a meeting point of 3 tectonic plates (the less visible ...
9
votes
2answers
286 views

A Swamp Valley reality check

I'm making a continent with a large valley, "the Great Valley is like a wound in the continent". Swamps are the dominant biome in this valley. It is surrounded by cliffs and inside of it I want there ...
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votes
2answers
207 views

Is my world's geography possible?

So imagine you're looking at the world map. More specifically, the left half (when the world map is cut along a vertical line, so the half stretches from the left edge of a current world map to a ...
7
votes
2answers
192 views

Can my land-mass realistically work?

I've come up with an idea of building a fantastical continent inspired by the climates of Scandinavia. It will be shaped similar to a crescent, and based on two tectonic plates that go over each ...
3
votes
2answers
188 views

Cardinal direction names at a north polar moon base?

There's a human settlement at the north pole of the moon large enough to sustain expansion outwards for say 100 km in all directions. Humans like to think in terms of four principal cardinal ...
6
votes
2answers
280 views

Would residents of a small planet realize the planet is small?

I am considering setting my next D&D campaign on an earthlike but small planet. By "small," I am imagining a world that still feels vast, yet is circumnavigable over land and/or water with low or ...
1
vote
4answers
282 views

The soil of mushroom island

If you have ever watched Tintin: Or played Minecraft: Then you may have dreamed, as I have, of an ecosystem dominated by Fungal life. As part of a Hard Sci-Fi RPG I'm running, I'd like one of the ...
3
votes
1answer
219 views

How far would I need to go back in time to find an isolated island on our earth?

If you want to tell a story of a lonely island on earth, isolated from the rest of the civilization, how many years do you have to go back to be realistic? I think about a story about 350 people who ...
7
votes
1answer
101 views

What are the circumstances in which swamps or everglades can have dramatic low and high tides?

I'm actually trying to create an alien ecosystem, so changing orbits, what's exhibiting tidal forces and the geography and such is welcome if needed. I also wonder how stable a setup with dramatic ...
-2
votes
3answers
326 views

Need help with placing cities in the map [closed]

Here's a terrain map of Iridia, my made-up country. It shares borders with two countries (Country A to the north and Country Z to the south). Iridia has friendly relations with country Z but has been ...
0
votes
2answers
412 views

What to call an island off the coast of an island? [closed]

So, on my map, I have an island, and, off the coast of that island, another, smaller island. Is there a specific geographical term for this? Is it a sub-island? A holm? I'm looking for something along ...
2
votes
10answers
593 views

Where can I easily/cheaply get a hundred square miles of land for a new country?

I'm looking to found a new country on a real-to-life Earth, and I need somewhere to put it. The country is going to be anywhere from 100 to 1000 square miles (250 to 2500 square km) in size. Assume a ...
15
votes
7answers
2k views

How can I tell I've travelled 20 million years into the future?

Story starts out about 100 years from now. While in orbit around Earth preparing for an interstellar mission, our spacecraft encounters some hand-wavey spacetime anomaly such that we're still in ...
7
votes
5answers
358 views

What city (or cities) in the U.S. would be a good sanctuary after apocalypse? [closed]

After an apocalyptic event (worldwide weaponized plague knocks out 90% of the population, say), what city in the U.S. would make a good sanctuary for survivors and the new capital for the remnant ...
19
votes
4answers
3k views

Would a river running through a large salt deposit turn red?

I’ve heard that bodies of water boasting high salinities tend to turn red due to seasonal algae blooms. I have a river in a fantasy setting I’m working on that’s blood red year-round, and I want to ...
31
votes
28answers
12k views

If my world is flat (obviously not possible) how would I explain the edges?

I don't want my world to be infinite, that would be a pain to draw maps for. And I need it to be flat (for a slightly unrelated reason). How would I explain why none has looked over or seen the edge ...
2
votes
3answers
196 views

Boiling Underwater Layer on an Ocean Planet

I'm coming up with ideas for locations in my sci-fi story and I thought of an interesting one. Here's the scenario: A planet has a watery ocean sitting on heated bedrock. Temperatures range from 500-...
6
votes
4answers
323 views

Could a large plateau surrounded by continuous waterfalls form?

Could a structure similar to that shown in the image below inspired by Roger Dean’s “Close to the edge” actually exist in nature? If not could it be constructed artificially and if so how? Assume the ...
7
votes
3answers
424 views

How would a 30-kilometer tall mountain on an Earthlike planet look?

Let us take an earthlike planet. Approximately same radius, atmosphere and climate. Now let us create an approximately circular, paleovolcanic mountain approximately 30 kilometers in height and 150 ...
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votes
2answers
123 views

How can a five-man special ops team sink an island? [closed]

First of all thanks in advance. I need suggestions on how a five man special ops team can sink an island entirely.
7
votes
2answers
425 views

What would be the main import and export of an advanced medieval jungle society?

The title society is in a remote mountainous jungle region, with lots of caves, underground lakes, and even an inactive volcano. It is very similar to the jungles of southeast Asia. The people who ...
9
votes
5answers
540 views

How to manage water in a city 2500 feet below sea level?

In my Pathfinder RPG campaign setting I have two continents separated by an isthmus. An artificial canyon carved through the isthmus from one ocean to another divides the continents. The canyon is ...
20
votes
6answers
2k views

Which geographical features would work best to make a plausible natural labyrinth?

In my world, the main "evil" race lives in a labyrinth like rock formation. They use a method of magic that gives them a hive mind advantage, so they all know how to move around within it. My question ...
54
votes
14answers
9k views

Would a castle built at the top of a mesa have unusual weaknesses?

Imagine some settlers are looking to build a castle in an area of expansive plans discover a small, isolated mesa: the formation has a very steep face, rising up 10-20m. The area of this formation ...
6
votes
3answers
192 views

Seeking correction/logic for map outline

Map is 1000 miles long and wide. In general, do these placements make sense? I'm also wondering: where volcanoes would be? why the coast is full of life and the west dead and barren? where the ...
1
vote
1answer
91 views

How would a noble gas lake form on an earth-like world?

Pretty much the title. I was thinking that it could have originated from a meteorite impact. I think that there are meteors that are made of frozen noble gases, so that would be the source of the "...
1
vote
1answer
131 views

Where would wind blow away the smoke from a giant fire?

In a "mountains and valleys" type area, there is a very large fire (say, an acre or two) that generates a lot of smoke. Where would the wind be strong enough and constant enough in this type of ...
3
votes
4answers
558 views

Could a human colony persist long term on a planet with limited food and water resources?

Suppose a highly tectonically active planet, slightly smaller than Earth, has attracted the human race's attention due to its mineral wealth. Its landscape primarily consists of mountain chains, ...
5
votes
5answers
1k views

How does planet size affect weather?

For simplicity assume hypothetically we make multiple copies of earth: XS, S, M, L, XL. The only difference between them is their size (radius), everything else is the same. S is half the size of ...
2
votes
2answers
148 views

What geological/geographical features are needed to support a Greco-Roman 'City of Fountains'

Belsaria is the City of Fountains. The capital of Nowheria, it's truly a civic marvel, due to the thousands of fountains that jet water into the air at every intersection and in the courtyards of ...
7
votes
3answers
242 views

What would happen if a volcanic cave was connected by a tunnel to a frozen cave?

Subangea is a giantic cave that stretches below the surface through endless cavities. From oil oceans to volcanic sinkholes and even upside-down forests, the environment is ever changing from one ...
3
votes
4answers
260 views

Could a geothermal plant work for several millennia

Is possible to have a geothermal plant (not necessary a very powerful one) to work for several millennia without the place where it is built over running out of heat? I found a page (don't remember ...
8
votes
4answers
1k views

How realistic is the geography of my map?

I was told to post this question separately, so here it is. I need help with the geography and climate of my map. Blue circles are ports Gray circles are cities That one brown circle is a town The ...
3
votes
3answers
828 views

How realistic is the placement of the cities and borders on my map?

I need some help with the placement of the cities on a map of one of my continents. I'm not looking for opinions, but more for a reality check on how realistic it is in terms of where things are and ...
17
votes
9answers
6k views

How large can a world be in fantasy? [closed]

As far as I read books, I met various worlds. Each of them has own size. Middle-earth is very large and partially not limited (some parts are only mentioned). Discworld is very large, but quite ...
1
vote
1answer
89 views

Ideal climate/topography/etc. to settle on an Earth-like planet? [closed]

If humans were to find a goldilocks planet with all of the conditions just right, what would be the best place to start a new colony? I figure access to abundant freshwater/aquifers, mild seasons, low ...
11
votes
5answers
2k views

A water cycle in an underground setting

The ozone layer depleted beyond reasonable levels and life on the surface has become impossible and life migrated underground in giant caves connected together by tunnels. Some of those caves have ...
1
vote
0answers
99 views

How would lifeforms adapt to a planet with compressional features? [closed]

I'm working on a story about how humans visit and start inhabiting an alien world in Messier 10 that contracted as its core cooled, not quite unlike Mercury. So I was wondering what the effects of the ...