Tokyo Flood Prevention | Insane underground tunnel system in Japan! 

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It cost 3 Billion dollars to build this system over a period of 13 years. If that was New York, it would’ve cost 3 Trillion and taken 33 years!

I love that Japan has a government where they think ahead and invest in solving problems early on.

Japan is extraordinary.. they have learned something from the disaster and always always done something amazing to prevent it in future.. Using money, brain and power at right thing..

I will not be surprised if japan will also build an artificial ozone layer.

Meanwhile here in Italy nearly every year when there's a flood: Politcians: we're so sorry for what happened and will pray for the ones that died.

Nobody here purposely search for this but everyone watch it with interest and awe

Japan then: imperialism. Japan now: tecc

Japanese people truly live by the words “You live & you learn.” & “When the opportunity comes, you don’t have time to prepare. So be prepared.”

Now I know where Godzilla has been hiding..

RU-vid be like: yeah, 6 years later, it's time you know what's up with Tokyo and the floodings, watch this

I salute the Japanese people for their amazing achievements 👏

No matter what complex or mind blowing their design. They explain in simply and with a smile

"So if you wouldn't mind please film quickly" I love this man

What an amazing feat of Japanese engineering and most impressive, just 3 Billion spent on this colossal structure. Go Japan!

Cheenai needs this

This is almost showcasing an art form. I really like it, a contribution to an encyclopedia of human ability and achievement.

"The major downside of Democracy is politicians don't fund long term projects." Japan: _We don't do that here_

japan truly cares about the safety of their ppl and country.

*Japanese Engineers looks at water:* _"you shall not pass!"_ I can't be the only one thinking about the Mines of Moria here...

I've always felt a kinship with Japan. Both New Zealand and Japan are long, skinny islands at the mercy of flooding, earthquakes and volcanoes.

The Netherlands: Finnaly a worthy opponent, our battle will be legendary!

Mean while in mumbai 15mins of heavy rain can leave entire city flooded. 😂 Respect japan from Mumbai India.

This is why I love Japan too much. Love and blessing from India ❤️🇮🇳

youtube algorithm working again, informing us after the flood in germany how to prevent flooding

Imagine if an ancient Roman Civil Engineer could have gone on that tour.

Engineering level: Japanese.

People who actually do the hard work to prevent future disasters always have my admiration!

So what I’ve learnt from this... Japanese engineering is crazy

Never knew something like this existed, seems like something out of a sci fi movie, incredible!

Every now and then I'm reminded just how next-level Japan is...

Clicked this because the thumbnail looked like “The Mines of Moria.”

Yow here in the Philippines, the drainage system is 💀

Imagine a govt actually caring about its people rather than wondering how to get re elected

Such an amazing country with intelligent people .

No wonder they use that place in all sorts of tokusatsu, it looks so cool.

Any Chennai people here

At 2:23 I was worried about the expert banging his head against the bridge :D

Japanese engineering is outstanding. I appreciate their government's ability to develop long term strategies and proactively solve problems.

I never get tired of hearing about this project. This project proves that there are rational solutions for long-term public problems.

Its crazy how respected Japan is in the world even after WW2. Japan is a very productive nation that look after their own interests. You have to respect that. They have their own way of doing things.

Amazing. The Japanese people are so incredibly resilient, and they are incredibly innovative. New Orleans could learn a few things from this incredible achievement. It is sad that such incredible innovations exist, but the United States instead just sits back and watches as the old infrastructure crumbles.

Japanese engineering is on another level.

Japan the leader in technology period!

If the US lets Japan rent one state, then we will learn a lot from that.

Japan: *_Improvise, Adapt, Overcome._*

Japan really live in 2050.

I remember reading in the book Musashi how Edo (now Tokyo) used to be a giant marsh that was occupied by thousands of day laborers to turn into a viable city. This was when Tokyo was lawless and the capital at the time was still Kyoto. After that the Tokugawa warlord made Edo castle the de facto capital while the royal capital remained in Kyoto and the emperors power dwindled. By 1721 it was the largest city in the world with 1,000,000 people.

One thing I love about Japan is never asking for help for any disaster, they still survive.

2:21 I felt really anxious about his bald head hitting the bridge.

Japan: We spent only 2 billion dollars to make a city un-floodable America: We spent 20 billion dollars on homeless programs that don’t work!

Absolutely AMAZING!!! These make for some great SciFi location shoots. Thanks, ABC Science.

I saw a video which showed the system in Tokyo and compared it to the one in London, England and how the system in Tokyo would survive so much rainfall. That is a great system and I hope it isn't tested by nature and it will continue to protect the city and region.

Imagine you’re taking a tour and you see water start flowing in

Someone basically watched the LoTR Mines of Moria and thought lets do this.

I love this kind of megastructures. Such amazing works.

Innovation at its best. Japan is a lovely country, they not only maintain their ancient traditions, but also an example of a technologically advanced country.

We Indians are living 100 years behind you Sir. Stuck permanently in the quicksand called religion and Caste.

7:20 The sewer level in Mirror's Edge. They even use green paint on the walls

WOW! These structures are just amazing , extraordinary technology from brilliant, intelligent minds !!!!!!!! Great video, thankyou !!!!!!

The Japanese people always seem so friendly. I also find them to be one of the most intelligent people

Can you imagine if Japan land mass equal in size United States... what they could accomplish.

Wow, actual news reporting from ABC. Impressive.

I can't wait to visit Japan...l love you guys..

What an extremely informative, beautifully presented, 12 minute jewel.

Imagine maintaining being rich after many earthquakes and typhoons occur

Tokio makes look NYC like a 3rd world city, I am from NY 🤔

Great admiration for those who engineered this giant build wow

Japanese people thinking is beyond imagination! The discipline, attitude and respect is undeniably the reason of their success! If the world is going to be like them I am sure we can have an amazing world where negativity were not grow and fosters and the children is going to have a smile on their face ❤️🙏🏻 I love Japan! Philippines needs this kind of waterway system to stop a massive flooding in the country!

Japan is full of great minds, I adore this country and I hope I could visit it.

Pennywise is just waiting down there.. biding his time

Malaysia should have this even earlier. We could save so much times and save money spent on the damage after the flood. We know that the flood will happen again and again and again every year yet we still dont take action

Japan always has something new to show us.

We need this here in Philippines, I've experienced to swim in open canals due to high floods. Flood is very common in our area specially in rainy season, due to this we can't see where the canal is.

The incredibly dramatic, Hollywood-esque movie soundtrack is what made this video for me.

Such an engineering marvel! The background music just scares the hell out of me!

When the camera looked upward the music started blaring haha.. This was such an epic video

Tokyo is an amazing city ... one of my favourite cities in the world!

Typhoon Hagibis (2019) trivia: this Underground Discharge Channel can impound 670K M3. Upstream of this water tank, there is another special reservoir to prevent massive flood; the Watarase Reservoir is capable to hold up to 170M M3. Again, a new flood preventive dam has been finished in the mountains just before the typhoon Hagibis passed over Japan. The new dam can impound approx. 120M M3. From Oct. 12 to 13, those facilities were almost full of the storm sewage, over 90 % of each full capacity, leading to just 1 dead in Tokyo area (as of Oct.21). Anyway, Japan's been spending huge money and time on flood control so far.

This is amazing feat. That's y i love japan. They have innovative ideas and solution. 🇯🇵

The Japanese are pretty impressive! 👍 Great Video!

They should have a few dozen web cams that we could view and see how wild it gets during a flood.

This video also popped out as one of my recommendations just now. But this is amazing. I did not knew Tokyo had this massive advanced halls and tunnel systems to prevent flooding. Japan is thinking ahead.

Impressive in concept and scale! 🎌

In fact, apart from this, we are also proceeding with the construction of an underground waterway connecting four rivers that will have the capacity to handle rainfall of 100 mm per hour, and will be completed in the next two years.

Japan really is on a whole different level from the rest of the world in all of their practices. It's isn't just remarkable, it's inspirational!

When I return to Japan (this time with my wife and kids), I desperately want to tour these engineering marvels, landmarks, and facilities! Does anyone know if such a thing is possible?!

LOL @10:19 "so, if you wouldn't mind please film quickly!"

Japan centuries old teaching on how to do anything in the most practical efficient way amazing looking at this underground marvel. They are world leaders in their ethos

Well, now we know the inspiration behind a certain Mirror's Edge level.

Philippines government must do this not hiding a money or corrupt

1:50, I’ve been doing some research, and I’m pretty sure NYC is in the ideal location for a major city. There is room to grow but not enough for the city to sprawl endlessly. It is situated on one of the worlds largest deep water harbors. And it has near surface bedrock to allow skyscrapers and other large constructions to be built cheaper. On top of that it is in a very stable climactic region with no fault lines or tornado areas

Japan is such an awesome country. Definitely need to go there one day

The bgm is so eerie that i was unknowingly expecting to come out.. a baby kaiju maybe? 🤦🏻‍♂️

Obviously it was fine, but I would have been at least a little nervous going into those emergency flood tunnels on a rainy day like they did 😂

The cistern under Constantinople is larger, and that was built in the 14th century. Rather than being a storm drain, it is a water storage cistern. And the pillars that hold up the city above, are huge.

they are insane a great innovation for water flood area

Jakarta Government really needs to see this. Rain only takes 2 hours to makes East Jakarta flooding

All I could think of whilst watching this is Mirror's Edge.

Excellent program I wish a New York City Official would look at this and try to do this in the city.