r/geography • • 22h ago

META r/geography does not allow self-promotion

152 Upvotes

Hello everyone! This has always been a rule, but whereas we used to get only a few posts a month, I have started deleting anywhere between 3 to 10 of these posts a day.

While I appreciate the effort that some of you may be putting into these sites, without prior mod approval, going forward there will be 30-day bans issued for such posts in an attempt to decrease them. I am just making this as a PSA.

If you message the mods we will let you know if you can post it. But please don’t do it if you just have a game idea, that will never be approved. If it’s a unique educational site that you made then it will be approved.


r/geography • • Sep 12 '26

META r/geography Census Results (Section 1)

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105 Upvotes

r/geography • • 10h ago Bravo

Question Why are the Dakotas so empty?

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3.4k Upvotes

There is so much land here in both states, yet there’s only one major highway through each and a bunch of small towns randomly spread out. I feel like there’s some potential here that’s been missed. Doesn’t seem like the reservations are that big either.


r/geography • • 17h ago

Discussion How come there's a mountain range in the middle of the Sahara, far away from any tectonic activity?

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4.0k Upvotes

r/geography • • 19h ago

Question What is the furthest you can see a skyscraper city away from?

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1.2k Upvotes

r/geography • • 17h ago

Discussion why cant we build a few canals and use these natural basins for all the excess water we are gonna get from melting ice caps ?

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647 Upvotes

r/geography • • 4h ago

Map Apolaki Caldera: The largest known megacaldera on Earth (150 km wide), hidden under the Philippine Sea.

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35 Upvotes

Coordinates for lookups: 16°30'N, 125°00'E (approx. center on the Philippine Rise / Benham Rise).

While scanning the bathymetry layers off the eastern coast of Luzon, Philippines, the massive subsea circular structure sitting atop the Philippine Rise (Benham Rise) platform immediately catches the eye.

A few key geological facts about the site:

  • Dimensions: The feature measures roughly 150 kilometers (93 miles) across, making it the largest documented caldera on Earth. For scale, Yellowstone’s caldera spans about 60–70 km, and Lake Toba measures around 30×100 km.

  • Discovery: Formally described around 2019 by marine geophysicist Dr. Jenny Barretto and her team during bathymetric analysis of the ocean floor.

  • Name Origin: Named "Apolaki" after the Filipino mythical god of sun and war.

  • Geological Origin: Formed during massive volcanic activity on the volcanic ridge complex roughly 42 to 48 million years ago. The entire platform collapsed during major eruption phases, forming a deep central depression surrounded by high bathymetric rims.

Bathymetric relief maps highlight how sharply the caldera rim drops into the central depression relative to the surrounding ocean basin floor.


r/geography • • 14h ago

Discussion Why are none of the largest cities in the uk coastal

177 Upvotes

the top 5 biggest cities in the uk by population

london

birmingham

Manchester

leeds

glasgow

and despite being so big and being located on an island nation they’ve managed to avoid the coast why is that


r/geography • • 21h ago

Video How much of Romania can you actually see from its highest point?

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481 Upvotes

✧ A 360° ray-cast viewshed originating from Moldoveanu Peak (2,544 m summit, sampled at 2,517 m on the 30 m DEM grid), accounting for Earth's curvature, atmospheric refraction, and a 2 m observer eye height.

✧ From this rooftop of the country, a total of 4.8% of Romania's land area remains in direct line of sight.

✧ The top map tracks the sweeping visibility, while the bottom panel animates a full 360° horizon panorama spinning around the compass, charting lines of sight up to 140+ km away.

Data: Copernicus DEM GLO-30 (ESA), GADM 4.1 | Made with Python.


r/geography • • 13h ago

Question What are these giant lines near Darwin, Australia?

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102 Upvotes

r/geography • • 1d ago

Question Is this considered a hurricane or tropical storm, and how rare is it to hit Morocco ? Is El Nino the cause of this storm ?

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82 Upvotes

r/geography • • 1d ago

Question Why is Manchuria region near Korea so flat but the Korean penensuila is full of mountains?

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1.6k Upvotes

r/geography • • 1d ago

Question Why is this desert in china so flat?

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2.1k Upvotes

Compared to any other desert, it looks way too flat. There's nothing there. Even in Sahara and Arabian deserts, you can see the wind patterns and terrain. Why's that?


r/geography • • 1d ago

Question Is erosion solely responsible for the vein-like Mormon Mountains foothills going into the Mojave desert?

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127 Upvotes

Picture taken from Moapa Peak in the Mormon Mountains. Why do the foothills of the Mormon Mountains have a vein like pattern? I'm sure erosion plays a role in shaping the foothills, but it still seems a bit odd with the surrounding flat desert. The relatively green valley between the foothills is a Wash draining the south side of the mountains towards the Colorado River


r/geography • • 1d ago

Map Reminder that Chad is bigger than France and Germany combined

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486 Upvotes

r/geography • • 1d ago

Video Ucluelet Storm waves

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184 Upvotes

If you don’t upvote this video you hate Mother Nature!!


r/geography • • 1d ago

Research MIT: The Amazon is pirating water from Rio Orinoco headwaters

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158 Upvotes

The Amazon River Basin is slowly "stealing" the upper Orinoco River through a rare natural side-channel called the Casiquiare, which flows down a steeper path toward the Amazon and is eroding deeper over time while the flatter Orinoco clogs with sediment. Eventually, this steeper route will completely hijack the Orinoco’s upper headwaters. https://dspace.mit.edu/entities/publication/e20169d3-54ac-41d4-af5f-ad25cbe18690


r/geography • • 1d ago

Question Why river between Germany and Luxembourg is neutral?

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48 Upvotes

r/geography • • 2d ago Bravo

Discussion Of the 100 largest islands in the world. Which one would you live on knowing you could not ever leave??

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4.2k Upvotes

r/geography • • 19h ago

Question Are there regions in kenya, nigeria or west africa that are as densely populated as rwanda or burundi.

0 Upvotes

I am talking about same territoral size roughly same size and population number. Also list region or province name of territory.


r/geography • • 2d ago

Map Is this considered a cape or a peninsula?

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318 Upvotes

r/geography • • 2d ago Bravo

Human Geography Is this the most densely populated 100km radius area in the world?

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1.9k Upvotes

I've been exploring with this tool:

https://tomforth.co.uk/circlepopulations/

and haven't found anywhere else with more people than this, centred on Dhaka in Bangladesh.


r/geography • • 2d ago

Question Why didn't agriculture take off in the Australian Channel Country, given that it's a region full of rivers and lakes in a flat desert, creating similar conditions as Mesopotamia and the Nile Delta?

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848 Upvotes

r/geography • • 2d ago

Question Why is there a major city here?

366 Upvotes

Why is this location for the fourth most populated city in the United States, the most populated city in the US South, and the most populated city in the center of the country? Why is also one of the most popular relocation destination in the country?


r/geography • • 1d ago

Image Sete Cidades

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5 Upvotes