A terrifying simulation showing the realities of the 2004 tsunami reveals just how fast it would have crashed through towns.

On Boxing Day that year, those who were vacationing or living on the coast of South and Southeast Asia experienced one of the deadliest earthquakes and tsunamis of the century.

With over 220,000 people losing their lives, and 139,000 homes being swept away, it was something that devastated lives forever.

But as the footage of the tsunami is rare, this simulation provides a great insight into how inescapable it really was.

Whilst there has been a man who accidentally caught the beginning of the wave, there isn’t footage to show the actual impact.

Of course, anyone who was close enough to film that was probably swept along with it, so this video created by Zack D Films, a YouTuber who makes the scariest real-life simulations you’ve ever seen.

He once made one about what to do if you fall from a great height, and another about the Khamar Daban deaths.

For this video, he explained to viewers how the tsunami began, sharing: “The water started to recede, rapidly, exposing the ocean floor.”

He added that those who were there were ‘confused by this’ until they started to ‘notice the wave coming closer to the shore’.

This wave wasn’t something you’d stay close to if you had the option to get away from it.

It was a 100 foot wave which was caused by two tectonic plates surging upwards of about 40 meters, causing the 800-mile rupture.

The earthquake began because of the Indian and Burma plates subducted 20 miles below the ocean floor, releasing the energy of 23,000 Hiroshima-type atomic bombs.

On the richter scale, used to measure the magnitude of an earthquake, the 2004 Indian Ocean earthquake hit a magnitude of 9.1, triggering a tsunami that would do most of the damage, destroying several coastal areas.

Near the city of Banda Aceh, Indonesia, waves reached heights of 51m, killing almost170,000 people alone.

Sri Lanka, which is 1,100 miles from Sumatra, felt the wrath of it two hours later and it claimed the lives of 35,322 people.

The tsunami then hit the coasts of Thailand, killing 8,000 people.

Somalia, Maldives, Malaysia, Myanmar and Tanzani also felt the wave, as it affected 14 countries.

The tsunami killed over 220,000 people (YouTube/zackdfilms)

In total, there were almost 230,000 fatalities across the 14 countries, with donations totalling $6.25 billion (£4.7 billion) as the world tried to assist in the rescue of people affected by the event.

Louis Mullan, a British survivor of the tsunami shared that he first realised something was going on when he looked out towards the ocean.

“I remember seeing lots of sand and a bubbling, white line in the sea in the distance, but I had no idea what was coming,” he explained.

He was thankfully able to get to safety with his brother, Theo, but their parents tragically died.

Another survivor called Louise was 6 at the time of the impact, and she shared how it affected her childhood.

“It was carnage, there was people screaming and everyone’s just running,” she said. “We were just like ‘there’s a height, let’s get up there.

“I remember being scared of the sea for like, four years, which sounds really stupid,” she recalled.

“The sea would like go back a tiny bit, just because it does, and I would be like ‘oh my god, it’s going to happen again.'”

When a devastating tsunami struck several countries in 2004, it killed over 220,000 people and caused damage that would take years to fully repair.

Indonesia, Sri Lanka, India, and Thailand bore the brunt of the tsunami, which began due to the movement of volcanic plates beneath the surface of the sea.

20 miles beneath the ocean floor, the India plate and the Burma microplate subducted, which is where the plates collide and one slides under the other.

That led to an 800-mile rupture, which triggered a massive earthquake that reached a magnitude of 9.1 on the Richter scale.

The movement of the plates also caused the ocean floor to rise by 40 metres, which in turn triggered the tsunami.

As giant waves of destruction headed for the coastlines of multiple countries, some people captured the early stages of the disaster through holiday footage.

Footage of the tsunami showed the waves moving away from the beach (YouTube/Pilot90)

Among the footage is a video showing the frightening power of a tsunami, as people watching it could see the waves were going backwards.

Taken by YouTuber Pilot90, it shows one of the later waves that followed the initial hit of the tsunami, andyou can see the waves moving in reverse.

The reason this happens, according to the National Oceanography Centre, is that a tsunami will draw water back from the beach to ‘feed’ the gargantuan wave.

What you’re seeing is the tide going out with alarming speed and power to feed the next tsunami wave.

Viewers have been stunned and scared by seeing the waves moving in reverse, admitting it was a ‘weird and scary’ sight to see the ocean not behaving how it ought to.

While some were saying how the waves going backwards ‘freaked them out’ thanks to the ‘power and energy underneath the surface of the water’, others pointed out that this was a major warning sign of a tsunami.

They explained that when it looks like the waves are moving in reverse and the water is drained off the beach, it means a tsunami is on the way, as all that water will return with terrifying force.

If you ever see such a thing, then ‘you should be running now’, according to their advice, and try to look for ‘higher ground’.

A survivor of the Boxing Day tsunami of 2004 recalled being swept away from his family, becoming separated from his brother and never seeing his parents again after that.

After the devastation, people from around the world donated billions to help pay for the long repair works.

A first-person simulation shows just how terrifying it would be to ride the ‘euthanasia rollercoaster’ that is designed to kill everyone onboard.

Lithuanian engineer Julijonas Urbonas came up with the award-winning hypothetical design in 2010, and it became commonly referred to as the ‘hypothetic death machine’.

The 1,600ft coaster, which would go up to 223mph, sees each passenger experience a series of looping tracks, which get smaller and smaller as the rollercoaster progresses, eventually leading to death.

The first-person simulation is truly terrifying (YouTube/Great American Coasters)

It would take around 60 seconds to ride and go through all seven inversions, as each inversion gets tighter.

Urbonas decided that he would include space for 24 people, as each person has the option of pressing one of two buttons, ‘stop’ and go’.

And if just one person out of the two dozen decides against it, the ride would be put to a stop.

Though it’s not so much the speed that kills the passengers, but the 10Gs of force at hand.

Urbonas explained: “Riding the coaster’s track, the rider is subjected to a series of intensive motion elements that induce various unique experiences: from euphoria to thrill, and from tunnel vision to loss of consciousness, and, eventually, death.

The euthanasia rollercoaster project was led by Lithuanian engineer Julijonas Urbonas (YouTube/Great American Coasters)

“From there, you would begin experiencing a blackout and ultimately you would eventually lose consciousness and die.”

For context, Formula 1 cars reach a G-force of above 6Gs when taking a bend, while the Apollo 16 comes in at 7.19Gs.

Now, YouTube channel ‘Great American Coasters’ has shared a horrifying first-person simulation video of what would happen if the coaster was ever made.

“Apparently, you enter the ride on a single seat, so you get no partner while you take the plunge, and you go up a chain lift very slowly,” the content creator explained.

“He seemed to really express that part, because he wants you to take it all in before you decide to end your life.

“This would have been the tallest coaster in the world, if it ever got built. Kimika is over 456 feet. This would be about 1600.

“As you reflect on your life, it’s too late. You descend. That’s near terminal velocity, meaning you’re going almost as fast as a force of gravity, 100 meters per second, 223 miles per hour.”

“As you go down, you may think this is the best coaster drop of all time. I mean, I imagine, because it’s so freaking tall.”

He added: “But what happens next is not so pretty. Remember, you’re going at 223 miles an hour, and you have to level out the bottom.

“Instead of going with the force of gravity, you’re going against it. And by doing this, you’re exerting a lot of G force.

“If you experience something like two G’s, that’d be twice your body weight, pressing down on you, just levelling up, another G is another multiplier to your body weight. So 10 G’s would be 10 times your body weight, forcing down on you.”

The euthanasia rollercoaster project won Urbonas the Public Prize of New Technological Art of Update 2013.

If you’re a bit of a history aficionado then you’d probably be interested in learning all about the various ways people have treated each other horribly over the years.

Depending on which period of history takes your fancy you might be more of a Brazen Bull fan and be enamoured by a Greek contraption which cooks the occupant while turning their screams into animal noises.

If the ancient Persians are more your tempo then you’ll no doubt be familiar with scaphism and know that with two boats, some milk and lashings of honey you could subject some poor soul to the worst experience ever.

However, if you’re in the market for a more UK-centric method of torture and execution for proper Brits then there’s plenty to sate your fascination with the darker side of history too.

This local method of torture for local people is known as the rack, and you’ve likely witnessed it at some point in the grand world of pop culture.

An artistic depiction of a man being tortured by the rack in the Tower of London, a truly horrible fate (Universal History Archive/Universal Images Group via Getty Images)

The device is pretty basic in its operation, you pretty much lie your victim on a table that has a couple of rollers at either end, tie their arms and legs to the rollers and as you turn them it pulls them further and further away.

You might be thinking ‘Oh it’s just a bit of stretching, it might hurt a bit but I could take that’.

No you f**king couldn’t.

The rack would tear your limbs out of their joints, rupture your muscles and leave you in catastrophic agony and ready to say whatever you think would get you out of your current predicament, rather underlining the fact that torture isn’t an effective method of gathering information.

In extreme cases your bones could even break under the pressure, and the person running the torture would work to make sure you stayed awake as long as possible to experience it all.

A torture rack in the Tower of London (By David Bjorgen – Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=1069250)

While the rack originates from a time period long ago it maintained popularity throughout the ages and continued to be used in medieval times.

In England, a rack used in the Tower of London got the nickname ‘the Duke of Exeter’s daughter’ as it was supposedly used often enough that he became associated with it.

In 1606 a man named Nicholas Owen who built priest holes for Catholics to hide in died on the rack in the Tower of London but gave up no information, he was canonised as a saint in 1970 and became the patron saint of illusionists and escapologists.

Guy Fawkes is thought to have been tortured on the rack before his execution, while in 1628 a man who assassinated a noble was threatened with being put upon the rack before judges declared that using the torture device was illegal.

It was certainly a decision for the best.