Thanks to all the Telegraph Museum team: pull down the description for more about the museum and Porthcurno!

Get your shovel! We're going data mining.

Came in my email as" Tom scott has uploaded your private messag ". Nearly gave me a heart attack

"Don't always believe what you see on KZfaq" **Tom sweats intensely**

_"Don't always believe what you see on youtube"_ - Some guy on youtube

Never heard about this. Down the research rabbit hole I go.

Those flame throwers got it lookin’ like the Micheal Bay

100GB/s? That's actually a lot less than I would have expected.

Who would win: The entire island of Jersey, or some anchor

I’ve never seen those flamethrower walls, those are terrifying!

So when Tom uploaded this video. A copy of it was sent via those same cables to all the youtube servers around the world. Just think about that

"There is a beach near you" I'm afraid not

I'm going to share this around in the hope that this video (or a link to it, anyway) will travel through the cables discussed in the video itself.

There is a lot packed into the phrase "not a coicidence." The UK is part of the Five Eyes, a coalition of the US, UK, Australia, New Zealand, and Canada (basically the five most industrial English speaking countries with good relations). These countries all spy on each others internet activity and then share the data so that each can then get access to data about their own citizens and, well, the majority of communication around the world which usually passes along the cables into or out of at least one of them at some point. The organization started during the Cold War, became public in the 1990s, and had the internet signals intelligence program leaked by Snowden a few years back.

Back in the day when I worked in a corporate mainframe department, I was in Sunnyvale CA and we were satellite linked to an IBM in Hartford CT. Those half second delays you mentioned were multiplied by the protocol used by our 3270 terminals, to the extent that a screen refresh meant a coffee break.

Loved that you explained orbiting as falling, helps prevent misinformation.

i get overly-excited whenever i see you've uploaded

0:13 And I thought people went to beaches to beat the heat.

Watching here in the US, I realized that this video probably went under Porthcurno beach on its way to a US KZfaq server.

This was so interesting! I knew those cables existed, but the scale of them is immense. A longer video on the the global network would be fascinating!

Flamethrowers on a beach? Sure, that'll do wonders for the grey seals.

I worked for an ISP that owned many of those cables. You would be amazed on how often they get cut or damaged. That is why there are multiple lines and protocols like BGP in place to re-route traffic.

And right next to it is Minack Theatre. Which also has some cool history.

I was just staying in porthcurno on holiday when this video was being recorded! When I was at the museum I though it might be something you would be interested in!!

imagine moving image of NOT SAFE FOR WORK media flowing on that every second.

I love old technology, not only is it extremely interesting to learn how computers and communication have progressed but also the components and equipment used to build it are quite impressive in their function and design, the techno-steampunkesque esthetic of the valve terminations (at 0:50) is not as common (if at all incorporated) in the design of modern technology.

Well this *shore* is eye-opening, thanks Tom for every *shingle* bit of info in this video....

Went to see the beach, hut and museum about two years ago. The museum was one of the most interesting of my life! Very well organised and presented. As of the subject matter... everything about communication from smoke to cell phones. Absolutely fantastic!

It's a fantastic place to visit. Just be sure to give yourself plenty of time - so much to see. Thanks Tom, great video as always!

Yes! Finally! Been waiting for a porthcurno video for ages! Well done tom & team!

I've actually been here, but little did I know that people's conversations were stil running under that beach! Great video

Not hard to realize when you work for a major network provider, heck *today* (well I guess technically yesterday, but I have Sunday's off) a sea cable going from mainland the Netherlands to Schiermonnikoog, one of the tiny island just off the northern coast, was broken. Luckily there were more fiber optic cables and all the island's connections could be migrated to the cable used by the mobile data network.

Your videos are always so interesting. I love how you get to travel on location to each place. It's amazing.

Every video you make just never ceases to amaze and entertain me. Thank you for your hard work!!

What's interesting is there are several undersea cable terminals in western Greenland. They seem to be stopovers for cables between the Canadian Arctic and Britain / Europe. It wouldn't surprise me if the military was involved.

Mark Thomas' channel has a great 1 hour documentary on the 'secret cables of Cornwall' and those Cornish 'houses' with suspiciously large numbers of manhole covers outside!!

What if this video went through this exact wire?

Really love your videos. They're short and informative.. not drawn out to meet the best time to return ratio (not that I would hate if you had to.) Good work dude.

Love the videos Tom. Keep them coming.

Once again, a fascinating video! Thanks Tom!

I'm so happy to finally see this video come up! After the post of you using at A1 bus service down to portcurno went up on Instagram it was only a matter of time! I have visited this museum loads and visit the back regularly. Actually I just got back from Cornwall yesterday!! Great video!

What a gorgeous beach

Amazing. Well done. Keep 'em coming.

I wondered when you'd do a video on Porthcurno. I was there in July last year. The museum is fascinating and very much worth a visit!

A very interesting account, concise and to the point with excellent narration!

I used to go to this beach all the time as a kid, and never knew about this! Super cool, cheers Tom

Awesome to see you making a video about the beach I always went to on vacation as a child! Greetings from Germany

This was very interesting, tom! Thanks for sharing!

I am both amazed by and enjoy the stories that you tell.

went to the minack theatre in february. lovely views and a lovely beach. great vid

I LIVE HERE!!! Can't believe I missed you Tom😢😢

Oddly enough there is a news story here in the Netherlands that the island of Schiermonnikoog lost its cable connection two days ago. There is no cable tv, no landline phone connection, or internet there anymore and even ATMs no longer work. Mobile phones (and internet through mobiles) do still work through a different connection. They've only just managed to set up a workaround, to make it work till the fibre optic cable is fixed again.

Must visit museum really interesting and very well done!

Praise you, Tom!

Visited this museum as a kid and now I live in Japan, very cool!

2:10 Sounds like this place could use one of those Inogon Lights.

I got changed behind that white hut after swimming at Porthcurno beach last summer! I had no idea it was such a significant place!

I was there a few years ago. Had no idea it was such an important strategic place

I've been there! Tom, are you going to visit and do a piece on the Minack Theatre carved into the cliff around the corner? That beach also has a shelf of sand that drops like a cliff under the water in just a few feet. Walk out 10 feet into the water and you go from paddling to treading water.

Wow that was very interesting. I will have to visit that museum when I’m in Cornwall next.

Fascinating! I would love to check that place out.

Reminds me of the telegraph museum in Grimeton, a really fascinating place.

Absolutely fascinating. You have done it again, Sir (one day?) Thomas Scott.

I've been there! It was a while ago so this was a mind refresher for me.

Nice. I would love to visit that museum.

I remember wandering around those bunkers back when it was all still owned by Cable and Wireless. Also the Minack Theatre is cut into the cliff just around the headland where you can see some steps cut into the cliff.

that beach looks very smooth, i want to go there

How cool. I had no idea the old cables were still used

One of My familys favourite beaches to spend the day at. And visit the minack theatre on the cliff's above it.

My father worked for a company that laid undersea cable, and when I was twelve I got a tour of one of the cableships. Very impressive. They were one of the few private entities that were given access to the really accurate GPS that was normally reserved for the military.

Awesome video!

You just blew my mind 💥💥💥

The new landing station is at Skewjack, which is closer to Land's End. When I was young, there used to be a surf village there, called Skewjack Surf Village. Now it looks more like a flight hangar or something.

The Telegraph museum is supposed to be incredible. I've always wanted to visit it.

I hope you stopped at minack theatre round the corner Tom! Another fascinating story.

i live so close to that beach and never knew this, like its so cool to know!!

If you ever visit Porthcurno beach, I'd highly recommend checking out The Minack Theatre as well which is very close by.

Porthcurno is my favourite beach in the UK (if not the world) but I really didn't know much about this although I had seen the cable hut. I hope you have a video planned about the Minack theatre up on the cliff sometime down the line

Thank you for these video's :)

It's also one of the best Bass fishing beaches in the country when the tides are right

Was there just last week myself, what a great museum it is. Not a coincidence...is probably the fact that the museum makes almost no reference to teleprinter code, rather than morse which leads me to think some elements of their work are still hush hush. The Minack is absolutely spectacular - ended up walking up from the beach which is a bit of a climb!

So I live in Jersey. It's a small island in the English Channel off the coast of France. I remember when the internet connection loss happened. It damaged one of the two cables (I think), so Jersey Telecom had to route everyone's traffic through a single cable. This meant VERY slow internet for basically everyone on the island.

i love these videos :)

woah! didn't knew this... thanks mate

Whilst you’re in Cornwall, you might want to check out the Minack Theatre, it’s a gorgeous cliffside theatre with a rich history that I’m sure would interest you

Hey my hometown Jersey gets a mention. I worked for Jersey Telecom as a engineer when we 3 lost those cables a very busy few days

Oh, so you're the reason Porthcurno beach saw an unprecedented influx of visitors this summer, were you?

World Wide Web nowadays is literally a web of ginormous cables between entire continents.

I have been here and I never knew this was here.

Mind blown.

it still blows my mind that there is a massive undersea cable running from australia to north america. That's a long bloody way.

The construction company I used to work for was massively behind on a government project. The media was coming to do a video walkthrough the building, so even though there were cables missing from sockets they still put the sockets on the wall to make it look finished... And then we went back to work the next day making the place a really finished :D

Adam Hart Davies (whatever happened to him) did a section of one of his shows years ago about Porthcurno and that inspired me to take my family there (but of course it was me that was the most interested). Fascinating place!

i went to Porthcurno last week - maybe Tom could do a video about the Minack next?

Wow i’m in Cornwall now, cool!

something about how there's super long cables under the ocean connecting the worlds internet to eachother sounds nice

I literally went there this summer for my holiday and I had no clue about all this

just out of curiosity was it 100 gigabytes a second or 100 gigabits a second as the terms are often referred to as the same.

lovely that Tom

I was there in June this year! It was a really cool museum.. Did you get a chance to check out the Minack Theatre nearby? It could do for a video as well