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Think glaciers are just giant blocks of ice? Think again! Dive into the world’s 10 most dangerous glaciers, where epic avalanches, hidden crevasses, and sudden floods can change the planet—and history—in an instant. Which glacier blew your mind the most? Hit subscribe for more wild discoveries and drop a comment with your favorite jaw-dropping moment! #Nature #Glaciers #Science #Earth #Adventure
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0:00 - Introduction to Glaciers and Their Dangers
1:10 - Khumbu Icefall: Mount Everest's Deadly Pass
2:56 - Mendenhall Glacier: Hidden Dangers Beneath
4:19 - Vatnajokull: The Ice and Fire of Iceland
5:55 - Marmolada Glacier Tragedy in Italy
7:08 - Glaciers Across the Americas: Hazards and Changes
9:42 - Asian Glaciers: Floods and Sudden Movements
12:09 - Global Impact and the Future of Glaciers
👉 This channel was created in collaboration with https://www.youtube.com/@noelpolotv
0:00 - Introduction to Glaciers and Their Dangers
1:10 - Khumbu Icefall: Mount Everest's Deadly Pass
2:56 - Mendenhall Glacier: Hidden Dangers Beneath
4:19 - Vatnajokull: The Ice and Fire of Iceland
5:55 - Marmolada Glacier Tragedy in Italy
7:08 - Glaciers Across the Americas: Hazards and Changes
9:42 - Asian Glaciers: Floods and Sudden Movements
12:09 - Global Impact and the Future of Glaciers
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TravelTranscript
00:0010% of the Earth's surface is covered with ice, and what we're talking about are massive bodies of ice
00:06that have been forming in silence for thousands, even millions of years.
00:11Slow, patient, and seemingly motionless, but that's just an illusion because glaciers move, crack, and collapse.
00:19In just a few minutes, they can flood an entire valley, and in some cases, they have the power to
00:26completely change the geography of our planet.
00:30In 2022, a glacier in the Italian Alps suddenly collapsed without warning, killing 11 people in the middle of summer.
00:38In 2014, an ice avalanche in Nepal claimed the lives of 16 guides in just a few seconds.
00:46And there are glaciers today that, if they collapse, could raise sea levels enough to flood coastal cities around the
00:53world.
00:54Get ready because we're going to travel to the 10 most dangerous glaciers in the world.
01:00But before we start, if you're new to our channel, please click the subscribe button, and also hit the notification
01:06bell so you'll always be updated with our new videos.
01:11Khumbu Icefall, Nepal
01:12If you dream of climbing Mount Everest, there's one place you have to cross no matter what before you reach
01:19the summit.
01:20This is called the Khumbu Icefall, and many mountaineers consider it the most dangerous part of the entire climb.
01:27It's not because of the height, not because of the cold, but because of the very ground you're walking on.
01:33Because it seems alive.
01:35The Khumbu Icefall is a massive flow of ice located at about 5,400 meters above sea level in Nepal.
01:44This is where the Khumbu Glacier rapidly descends a steep and rocky slope and breaks into thousands of blocks of
01:52ice called Cerax.
01:54These structures are constantly moving.
01:58The glacier moves about 1 to 2 meters each day.
02:01This means the landscape literally changes every day.
02:05What happened on April 18, 2014, has become a part of mountaineering history.
02:11That morning, a massive block of ice suddenly collapsed without warning at the Khumbu Icefall.
02:17While a group of Sherpa guides were preparing the route for the expedition, 16 people lost their lives.
02:24They were either crushed or swept away by the avalanche.
02:27This became the deadliest accident in the history of Everest up to that time.
02:32And the more troubling part is that it still isn't safe.
02:36In 2026, a large block of ice in critical condition caused a temporary halt to climbs for several days due
02:45to the imminent danger of collapse.
02:48The Khumbu Icefall is still there.
02:50It continues to move and it still threatens to claim lives.
02:56Mendenhall Glacier
02:57Mendenhall
02:58In the southeastern part of Alaska, near Juneau, the Mendenhall Glacier is visited by thousands of tourists every year.
03:06At first glance, it seems easy to reach and peaceful.
03:10But beneath its surface, there is a complex system of tunnels, flowing water, and large holes that make it an
03:17unpredictable and dangerous environment.
03:20One of its most remarkable features is the ice caves, tunnels with a bright blue color that are formed because
03:28of the flow of water.
03:29The problem is, these are not permanent or stable.
03:33In addition, there are also moulins, vertical holes that carry water from the surface deep into the glacier.
03:40They're like huge holes that suck in water.
03:43They're like monsters that can drag anything that falls into them down into underground streams and tunnels that are almost
03:50impossible to follow.
03:52But the danger doesn't just come from the ice.
03:56Above the glacier, there's a place that stands out.
03:59It's called the Suicide Basin, where a huge amount of water accumulates every summer.
04:03When the pressure becomes strong enough, the system gives way and suddenly releases powerful floods that rush down the valley.
04:12Nearby areas are affected and authorities in the region are forced to issue warnings.
04:19Vatnajökull, Iceland
04:21Iceland is a country formed between fire and ice and there is no other place on the planet where this
04:27unique contradiction is more clearly seen than in Vatnajökull.
04:31This is the largest glacier in Europe, covering more than 8,000 square kilometers, and in some parts it reaches
04:39a thickness of over 900 meters.
04:42It is so massive that it could cover the entire island of Ireland.
04:46But the real reason why Vatnajökull is unique and extremely dangerous is because of what lies beneath it.
04:54There are active volcanoes under Vatnajökull.
04:57When one of these erupts, it slowly melts the ice from underneath with almost no visible signs.
05:05Until suddenly, the accumulated water rushes out.
05:09In just a few hours, millions of cubic meters of water, ice, and sediment can surge downward, sweeping away roads,
05:18bridges, and even entire infrastructure systems.
05:21In 1996, a volcanic eruption beneath Vatnajökull caused one of the largest glacier floods of the 20th century.
05:32In just a few hours, the flow of water from the glacier became even stronger than the Amazon River.
05:40Bridges and roads disappeared as if they had never been built.
05:44Fortunately, only a few people lived in the area, and no lives were lost.
05:50But no one can say whether the outcome will be the same the next time this occurs.
05:56Marmalata Glacier, Italy.
05:58In the middle of the Italian Alps, on top of the peaks of the Dolomites, lies the Marmalata Glacier, considered
06:04the most important glacier in Italy.
06:07For many years, it has been an important part of European mountaineering.
06:11But on July 3, 2022, the once beautiful scenery became the site of one of the worst glacier-related tragedies
06:21in recent years.
06:22There was no warning.
06:25A massive part of the glacier suddenly broke off from the mountain and rushed down at over 300 kilometers per
06:31hour or toward the routes taken by hikers.
06:36Eleven people lost their lives in just a few seconds.
06:40The main reason was extreme heat.
06:43On that summer day, the temperature in the Alps reached record levels.
06:48The glacier gradually melted from the inside until its structure finally gave way.
06:54According to researchers, the temperature on the surface of the glacier that day reached almost 10 degrees Celsius.
07:02What happened in Marmalata was not just an accident, it was a warning.
07:08Hubbard Glacier, Alaska, and Canada.
07:11Most of the glaciers in the world continue to retreat, gradually disappearing and melting due to the effects of global
07:19warming.
07:20But the Hubbard Glacier is not.
07:22It continues to advance.
07:24And instead of being good news, it is becoming one of the most concerning glaciers on the American continent.
07:31This is the longest tidal glacier in North America, with a massive ice front that is more than 10 kilometers
07:38wide and drops straight into the sea.
07:41From time to time, its advance reaches so far that it completely blocks the entrance to Russell Fjord.
07:50Because of this, water accumulates inside and a lake is formed that is separated from the ocean.
07:56This last happened on a large scale in 2002 and it had a significant impact on the marine ecosystem.
08:03Seals, porpoises, and other animals were left inside with almost no way to escape.
08:10Aside from this, Hubbard also causes some of the largest and most powerful ice collapses and ice falls in the
08:18world.
08:19It is continuously monitored by the United States military because of the danger it poses to navigation and to coastal
08:27infrastructure in the region.
08:28Gray Glacier, Chile, in the heart of Chilean Patagonia, you'll find Gray Glacier, which has one of the most breathtaking
08:37and cinematic views on this entire list.
08:40It spans approximately 6 kilometers while the ice front is over 30 meters high.
08:47In front of it is Gray Lake, which almost always has chunks of ice and icebergs floating on the water.
08:54The place is known for strong winds that can exceed 80 kilometers per hour or at certain times of the
09:00year.
09:01Because of this, sailing near the front of the glacier becomes a dangerous operation and the collapse of large chunks
09:09of ice continues to happen.
09:11In 1997, an enormous part of the glacier, covering about 1.5 square kilometers, collapsed into the lake.
09:20Because of this, the locals called the place a cemetery of icebergs.
09:25For three seasons, it became impossible for the passenger ship that took visitors to the glacier to operate.
09:32Since then, the glacier's collapse has accelerated even more, and scientists have warned that its stability continues to worsen every
09:40year.
09:42Karakoram Glaciers, Pakistan
09:44In northern Pakistan, you can find the Karakoram Mountain Range, which is home to one of the highest concentrations of
09:52glaciers outside the polar regions.
09:54But here, the danger doesn't come from just one glacier.
09:59It comes from the entire system.
10:02The glaciers of the Karakoram create an unstable environment where the ice doesn't just melt.
10:08Sometimes, it also suddenly advances.
10:11There are some glaciers that experience sudden movements where a large mass of ice moves quickly.
10:18In just a short period of time, it can completely change the landscape and destroy anything in its path.
10:25One of the biggest dangers in this region is glacial floods, or sudden flooding caused by glaciers where water accumulates
10:33in lakes trapped between ice and sediments.
10:36When this natural barrier gives way, the release of water is sudden.
10:41A recent example of this happened at the Schisper Glacier area when the pressure exceeded its limit.
10:47The flood suddenly rushed through and swept away important infrastructure, including a bridge on the Karakoram Highway.
10:55Atabasca Glacier, Canada.
10:57In the Canadian Rockies, the Atabasca Glacier is one of the most accessible glaciers in the world.
11:02It is part of the Columbia Ice Field and attracts thousands of tourists every year.
11:07And that's exactly the problem.
11:10At first glance, it seems easy and safe to walk on.
11:14But beneath its surface are deep crevasses, some of which reach tens of meters deep.
11:20They can be covered by a thin layer of snow, making them hard to see.
11:27These hidden traps have caused real accidents, including serious falls and even the deaths of people without enough experience.
11:36And the danger doesn't end there.
11:39Even in tourist spots, there have been major incidents.
11:44In 2020, a vehicle used by tourists overturned in the glacier area, resulting in several casualties and many injuries.
11:53Aside from this, the glacier itself continues to recede.
11:57It has already lost more than half of its volume in just over a century.
12:02Because of this, the terrain around it is becoming more unstable and harder to predict.
12:09Perito Moreno Glacier, Argentina, for many decades, the Perito Moreno Glacier has remained active.
12:15It's a major exception.
12:17While most of the world's glaciers continue to retreat, Perito Moreno has remained stable,
12:23becoming a symbol of ice's resistance to climate change.
12:26But that story has ended.
12:28Since 2019, the glacier has experienced its largest retreat in at least a century.
12:35And according to some scientists, this process may no longer be reversible.
12:41Each year, it loses an average of 8 meters in height.
12:45As it continues to retreat and lose mass, its ability to withstand the pressure of the water in the lake
12:52also weakens.
12:53As it loses its connection to the bedrock, ice collapses become more frequent and more intense.
13:01On June 5, 2025, a park ranger captured the moment when massive chunks of ice fell into the lake with
13:11tremendous force.
13:13It was like a giant wall of ice suddenly collapsing into the water.
13:18An awe-inspiring sight that hides a disturbing reality.
13:22What was once a controlled natural spectacle is now a clear sign of danger.
13:27The Perito Moreno Glacier is no longer an exception.
13:31Now it stands as proof.
13:35Antarctic glaciers
13:36We've talked about glaciers that have caused the deaths of mountaineers,
13:41destroyed infrastructure, and suddenly collapsed without warning.
13:45But none of those have the potential to be as dangerous as the two glaciers that we'll end our video
13:51with.
13:52Because these two don't just threaten a single person, a single valley, or even an entire region,
13:59they are a threat to the whole world.
14:01The Thwaites Glacier and Pine Island Glacier are the two important pillars that support West Antarctica.
14:08They act as a natural barrier that prevents the massive amount of ice from leaving the continent.
14:15When combined, these two glaciers hold so much ice that it's enough to raise sea levels by several meters over
14:23time.
14:24And now, that natural barrier is gradually weakening.
14:29Warmer seawater is flowing underneath the floating ice shelves,
14:33gradually melting the base of the glaciers.
14:37This process is called basal melting,
14:40as if the ocean is eating away at the glaciers from within,
14:44and we can hardly see it happening.
14:47A study published in January 2025 in a scientific journal
14:52indicated that if the current ocean conditions continue,
14:57the simulations show the possibility of the collapse of Thwaites and Pine Island in all tested scenarios.
15:05But this doesn't mean we have to wait for a very distant future.
15:10What's alarming is that the conditions causing this kind of change already exist today,
15:16and that's why these glaciers are different.
15:20They don't need an earthquake,
15:22they don't need a volcanic eruption,
15:24nor do they need an unusually hot summer.
15:28All they need is for the world to continue in its current state.
15:33Glaciers have existed for millions of years,
15:37quietly shaping our planet.
15:40They survive volcanic eruptions,
15:43long ice ages,
15:44and major disasters that wiped out many species on Earth.
15:50But none of those events happened as quickly as the changes we are seeing now.
15:54What we are seeing now are glaciers collapsing in the middle of summer.
15:59They are retreating by hundreds of meters in just a few years,
16:03and becoming unstable with almost no warning.
16:06This is an unprecedented change in our time.
16:09And the most important thing is this.
16:12This is not a problem of the future.
16:15The ice shelf is less stable than it was a decade ago.
16:19Perito Moreno has long been experiencing retreat that continues to accelerate,
16:23and the changes in Thwaites have already begun.
16:26The glaciers are not waiting,
16:28and the question now is no longer whether they will continue to change.
16:33The real question is,
16:35how fast?
16:37And since we are talking about glaciers,
16:40out of everything we have seen today,
16:41which do you think is the most dangerous?
16:43Let me know in the comments.
16:47And if you want to keep discovering the most amazing places on our planet,
16:51subscribe to Noel Polo Television.
16:54Let's keep exploring.
17:03We hope you guys enjoy tonight.
17:05We'll see you later.
17:07Take care.