Many fruitless discussions have been made about where someone would end up if they started digging under them with the aim of coming out the other side.
In Britain, some might assume Australia, while for Americans the most common answer would probably be China.
Although it’s not physically possible to know for sure—after all, it would take a roughly 8,000-mile (12,870 km) trek through Earth’s crust, mantle, inner and outer core—the interactive map provides a theoretical way to check the opposite point of location.
It reveals that the majority of the most populous cities on our planet have an antipodal point, or “antithesis”, somewhere in the ocean.
Of course, since the Earth’s surface is about 71 percent water, it’s not surprising that the chances of it getting to Earth are relatively low.
Digging Deep: An interactive map reveals that the majority of the most populous cities on our planet have an antipode, or “antipode,” somewhere in the ocean. This looks what the opposite of New York is…
It turns out that like the majority of the most populous cities on our planet, New York has an opposite point, or “antithesis,” somewhere in the periphery (pictured)
What cities are considered “appendages” or close to being sites of opposition to the land?
Cities that are almost exact opposites
Christchurch (New Zealand) and A Coruña (Spain)
Madrid (Spain) Weber (New Zealand)
Wellington (New Zealand) and Aligos (Spain)
Hong Kong (China) and La Cuyaca (Argentina)
Nelson (New Zealand) and Mogadoro (Portugal)
Wangari (New Zealand) and Tangier (Morocco)
Turanga (New Zealand) and Jaen (Spain)
Hamilton (New Zealand) and Cordoba (Spain)
Junin (Argentina) and Lianyungang
Ulan-Ude (Russia) and Puerto Natales (Chile)
Masterton (New Zealand) and Segovia
Palembang (Indonesia) and Neiva (Colombia)
Wuhai (China) and Valdivia (Chile)
Padang (Indonesia) and Esmeraldas (Ecuador)
Rafaela (Argentina) and Wuhu (China)
Galvez (Argentina) and Nanjing (China)
Big cities are close to being antitheses
Auckland (New Zealand), Seville and Malaga (Spain)
Xi’an (China) and Santiago (Chile)
Shanghai (China) and Buenos Aires (Argentina)
Beijing (China) and Bahia Blanca (Argentina)
Taipei (Taiwan) and Asuncion (Paraguay)
Bangkok (Thailand), Phnom Penh (Cambodia) and Lima (Peru)
Montevideo (Uruguay) and Seoul (South Korea)
Bogotá (Colombia) and Jakarta (Indonesia)
Suva (Fiji) and Timbuktu (Mali)
Melbourne and Canberra (Australia) and Azores (Portugal)
Manila (Philippines) and Cuiaba (Brazil)
Kuala Lumpur (Malaysia) and Cuenca (Ecuador)
Singapore and Quito (Ecuador)
Doha (Qatar) and Pitcairn Island (United Kingdom – Overseas Territory)
Antipodes Island (New Zealand) and Gateville-le-Var (France)
However, there are plenty of other cities that closely match or match each other, including Auckland in New Zealand with Seville and Malaga in Spain, as well as Shanghai in China with Argentina’s capital Buenos Aires.
The Chinese are among the relative minority in countries that would hit the ground running if they undertook this project, according to the Antipodes map website.
When digging a hole from central Beijing, you’ll come out on the Rio Negro, near Bahia Blanca in Argentina.
One example of two specific extremes is Ulan-Ude in Russia and Puerto Natales in Chile.
The two largest inhabited antifacial regions are located in East Asia, in China and Mongolia, and South America, in Argentina and Chile.
The Antipodes website writes: “The Australian mainland is the largest land mass with its antipodes entirely in the ocean.”
The British digging under the Houses of Parliament will reappear off the coast of New Zealand
This is where you would end up if you started digging under London and came out the other side
“The majority of sites on Earth do not have a floor opposite.”
The largest of the antiquarian land masses is the Malay Archipelago, which lies opposite the Amazon Basin and the adjacent Andean ranges.
An American digging a hole from Times Square in New York will end up in the ocean off the coast of Australia, while a Briton will descend. The Houses of Parliament will appear off the coast of New Zealand.
The Russians drilling from Moscow will find themselves in the middle of the Pacific Ocean.
And if you’re in Tokyo and want to get out on the other side of the earth, you’ll be farther off the coast of Uruguay.
By definition, the Arctic and Antarctic are opposites.
If you start drilling under Christchurch in New Zealand, you’ll almost hit the ground on the other side
Reappearance: This is because you will be going out near the city of La Coruna in Spain
There are plenty of other cities that match or closely match each other, including Auckland in New Zealand along with Seville and Malaga in Spain.
This shows how you’ll get out near Seville and Malaga in Spain by digging through Auckland
The Antipodes website states: “This map helps you find the antipodes (other side of the world) of any place on Earth.
(This) is the point on the Earth’s surface that is exactly opposite it.
The two opposite points are connected to each other by a straight line passing through the center of the Earth. The point is often called the anti-face of the bitmap.
She adds: “Most Europeans and Americans think that if you dig a hole, in a straight line through the center of the earth, you will come out on the other side in China.
But that’s just an aphorism, because, in fact, if you dig a straight tunnel, in most areas, in Europe or the United States, you’ll come out in the ocean.
The only places where a straight hole will appear in China are parts of Argentina and Chile.
It was originally thought that if it “falls” to the ground, it will take 42 minutes and 12 seconds to move from one side to the other.
However, research by Alexander Klotz, a graduate student in physics at McGill University in Montreal, Canada and published in the American Astrophysical Journal, later estimated that it would take 38 minutes.
The revised estimate came after taking into account the different densities of the Earth’s layers, resulting in a journey four minutes shorter than initially expected.
Is it possible to fall through the ground?
In theory, as a person falls through the Earth, gravity is constantly changing as they make their way to the center.
Thus they will speed up as they approach the center, and start slowing down again as they make their way to the other side.
Ignoring the effects of drag due to the presence of air, it would take exactly the same amount of time to make the trip on either side of the core.
Under these conditions, the speed reached during descent will be sufficient to reach the surface on the other side.
Earth’s density is less than 2,200 pounds (1,000 kg) per cubic meter at the surface, but 28,700 pounds (13,000 kg) per cubic meter at the core – 3,960 miles (6,370 km) below.
And 2,200 miles (3,500 kilometers) from the center, about halfway there, there’s also a dramatic jump in density near the outer core.
Using those numbers, it would take 38 minutes and 11 seconds to fall to Earth – four minutes and a second faster than was thought.