Si vous repérez un trou dans le sable à la plage, restez à l'écart—marcher dessus pourrait en réalité être dangereux ! ️ Ces trous peuvent parfois être creusés par des créatures comme les crabes de sable ou même les raies, et les déranger pourrait entraîner une rencontre douloureuse. Mais ce n’est pas le seul danger naturel sournois. Dans la forêt, les troncs d'arbres tombés peuvent sembler sûrs pour s'asseoir, mais ils peuvent cacher des tanières de serpents ou des nids d'insectes piqueurs. Et lors de randonnées, les pierres instables peuvent paraître solides jusqu'à ce qu'elles se déplacent sous votre poids, provoquant une glissade dangereuse. La nature a beaucoup de pièges cachés, donc rester vigilant et éviter tout ce qui semble suspect peut vous préserver lors de vos aventures en plein air ! Animation créée par Sympa. ---------------------------------------------------------------------------------------- Musique par Epidemic Sound https://www.epidemicsound.com Pour ne rien perdre de Sympa, abonnez-vous!: https://goo.gl/6E4Xna ---------------------------------------------------------------------------------------- Nos réseaux sociaux : Facebook: https://www.facebook.com/sympasympacom/ Instagram: https://www.instagram.com/sympa.officiel/ Stock de fichiers (photos, vidéos et autres): https://www.depositphotos.com https://www.shutterstock.com https://www.eastnews.ru ---------------------------------------------------------------------------------------- Si tu en veux encore plus, fais un tour ici: http://sympa-sympa.com
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FunTranscript
00:00Once upon a time, a young boy was about to dig a huge hole in the beach.
00:05But the situation quickly turned dramatic.
00:08The hole suddenly collapsed, imprisoning the boy up to his neck in the sand, like a human ice cube.
00:14Fortunately, his parents managed to prevent the sand from entering his mouth.
00:19The emergency services soon intervened and, after several attempts, the child was finally released.
00:26Experts emphasize that sand is an unstable and difficult material to master when it is handled.
00:32Thus, the lesson to be learned from this incident is clear.
00:36Enjoy the beach and have fun, but if you plan to dig a hole big enough to get in,
00:42make sure to limit the depth and choose the right place.
00:47Unfortunately, this incident is not isolated.
00:50Digging deep holes in the sand involves risks, which can lead to fatal accidents.
00:55According to a study, more than 50 cases of sand hole collapse have been reported around the world,
01:01many of which have led to deaths.
01:03So let's avoid becoming the next victim of an avoidable tragedy.
01:07So here are some recommendations from experts to guarantee your safety.
01:12Never dig a hole deeper than the height of the knees of the smallest person in your group,
01:17and make sure to cover the entire hole before leaving the site, day and night.
01:22In addition, avoid digging near dunes or shorelines,
01:26areas often occupied by emergency vehicles.
01:30Since we started with the holes on the beach, let's now address the land cladding.
01:35These claddings, also called dolines or havens, behave like masters of camouflage on the surface of the earth.
01:41Sometimes imposing, sometimes discreet, they often arise without warning.
01:45It's a bit like the game of mole hunting, except that here,
01:48they are not moles that we hunt, but real gophers.
01:52These deafening phenomena develop over the years and require very specific conditions and processes.
01:58But then, what is the mystery of these claddings?
02:01They are in fact natural depressions, or cavities that appear on the surface of the earth due to karstification.
02:09And what is karstification, you may ask?
02:12It occurs when the substrates of the earth's crust are soluble,
02:16as if they had a hidden weakness, the water here playing the role of a real kryptonite.
02:21Although the dolines form slowly, they have this unpredictable side,
02:25a bit like this strange friend that always arises where we do not expect it.
02:29Interesting fact?
02:31The Xiaoxaitiankeng, a monumental gulf more than 660 meters deep,
02:36holds the title of the deepest and largest gulf in the world.
02:41If some researchers think that a meteorite impact is at the origin,
02:45others estimate that it formed over a period of 128,000 years
02:49under the action of underground rivers that gradually eroded the surrounding limestone.
02:55Anyway, this gulf is truly amazing.
02:59Locals have known it for generations,
03:02but it was only in 1994 that the rest of the world learned about its existence,
03:08following a British expedition.
03:10This site houses more than 1,200 species of plants and animals,
03:14some of which are rare, such as the jingo biloba or the nebulous panther.
03:19During the rainy season, a waterfall overflows,
03:22feeding a network of underground rivers and caves,
03:25thus creating a real world apart.
03:29Now let's talk about hail storms.
03:31Consider them as the way nature shouts GAR,
03:35in the most brutal way possible.
03:38Hail is like frozen rain under steroids,
03:41and when it starts to fall, it is better to take shelter.
03:45Although hail storms usually don't last more than 15 minutes,
03:49they can cause serious damage in record time,
03:52affecting buildings, vehicles and crops.
03:55They can even cut power lines and cut down trees.
03:59If you are unlucky and find yourself in the middle of a storm,
04:02the experience could give you the impression of being a living flipper.
04:06Here are some reasons why hail storms are a real danger.
04:11Caution, pilot!
04:13If you find that the turbulence is already formidable,
04:16imagine crossing a hail storm in mid-flight.
04:19In 2018, a plane crashed in northern Mexico
04:22after being caught in a hail storm.
04:25Fortunately, everyone on board was able to pull out unscathed.
04:29Hail is not only a danger to planes,
04:32but also to motorists.
04:35Imagine yourself on the highway when a sudden impact
04:38breaks your windshield into a multitude of fragments.
04:41Visibility becomes almost zero,
04:44and the road turns into a slippery surface.
04:48Farmers, on the other hand,
04:50are fully affected by the effects of hail storms.
04:53These violent gusts and long hail can ravage crops,
04:57leaving behind rotten plants and torn bark.
05:01In just a few minutes, months of hard work can be destroyed,
05:05causing considerable losses.
05:08When summer arrives,
05:10who does not like to indulge in the joys of the sun,
05:12relax on the sand or tame the waves?
05:15Beware, however, of the torrents.
05:17These powerful canals, narrow and fast,
05:20are omnipresent along the coasts
05:22and on the banks of the Great Lakes of North America.
05:25Their speed can exceed 2 meters per second.
05:29In the face of a torrent,
05:31it is common for swimmers to panic
05:33and try to regain the beach in a straight line,
05:36which is a mistake that may exhaust them,
05:39or even worse.
05:40So, what to do if you are trapped?
05:44The key is to keep calm
05:46and avoid fighting against the current.
05:48Swim rather parallel to the coast,
05:50then gradually return to the land firm in bias.
05:53Small precision.
05:55Rebound and return currents are not to be confused.
05:58Return currents designate a particular type of current,
06:02caused by the rapid movement of the tide
06:05through passages such as estuaries and ports.
06:08Landslides are another unpredictable danger.
06:12The mountains,
06:13although they give the impression of being immutable and robust,
06:16are not as stable as they seem.
06:19Do not be fooled by this apparent solidity.
06:22Landslides can occur anywhere,
06:25at any time.
06:27They occur when large amounts of land,
06:30rocks and various debris are shaken
06:33and begin to swallow a slope.
06:35This can be caused by abundant rainfall,
06:38earthquakes,
06:39or even for no apparent reason,
06:41simply because the ground gives way under the accumulated pressure.
06:44Mother Nature has not finished surprising us.
06:47Let's start with heatwaves,
06:49a more burning meteorological phenomenon than a tabasco flash.
06:53Unlike ordinary storms,
06:55heatwaves require very precise atmospheric conditions to occur.
07:00For a heatwave to occur,
07:02a very dry air must descend from high altitudes,
07:05and that no precipitation evaporates.
07:08When these conditions are met,
07:10it generates a breath of heat of such intensity
07:13that one could believe to be flying towards the sun.
07:15This air, not only burning,
07:17but also so dry that it dries everything in its path,
07:20including the most vulnerable vegetation.
07:24Have you ever heard of fire whirlwinds,
07:26also known as fire tornadoes?
07:29It is a vortex made up of flames and ashes,
07:32capable of absorbing debris as well as combustible gases.
07:36It can be considered as a kind of mini-tornado
07:38fed by a blazing blaze.
07:41These phenomena usually begin with a whirlwind visible through the smoke.
07:45They are formed when the rising heat
07:47combines with windy conditions,
07:49generating air whirlwinds.
07:51Sometimes these whirlwinds become so powerful
07:53that they create a vortex similar to a tornado,
07:56attracting everything in its path.
07:59It happens that we designate a fire whirlwind
08:01under other names,
08:02such as fire tornado or fire storm.
08:05However,
08:06these terms often refer to distinct phenomena
08:09where a fire of sufficient intensity
08:11can generate a real tornado.
08:13Fire whirlwinds are characterized
08:15by the fact that their vortex does not necessarily extend from the ground
08:18to the clouds.
08:20Even when they reach this height,
08:22they are generally not considered as classic tornadoes
08:25because their formation differs.
08:27These phenomena can also reach very high temperatures,
08:31reaching up to 1000 ° C.
08:33Fire whirlwinds tend to form
08:36during forest fires or fire storms,
08:39especially when the wind is strong enough
08:42to generate large vortexes.
08:44The most imposing can be gigantic
08:47and are even able to root out trees
08:4915 meters high.
08:51So here is this unusual natural phenomenon.
08:54Have you ever experienced one of them?
08:57Do not hesitate to share it with us in the comments.