Illgraben 22.07.2016 - lave torrentielle, Murgang, debris flow

[@darylmorse]

What an incredible show of the power of nature. The boulders being pushed by the stream of mud were massive!

[@randallsmerna384]

Without a doubt one of the craziest ones I've seen! Those rocks were MASSIVE!

[@graziellanonanona209]

Je suis impressionnée par la taille des roches déplacées. Quelle puissance !

[@chandarussell]

Water is an incredible natural force. Just look at the size of the boulders it was pushing with such ease. Amazing.

[@CJLinOHIO]

What amazes me the most is the power of the water moving boulders that obviously weigh as much as a car or a bus. Amazing just amazing.

[@snezzzen]

The size of the boulders..! excellent video :)

[@andrewsercer9538]

Looks kinda like a river of wet concrete

[@billjakovac9104]

Just when you think it’s slowing down, another big rock is pushed over the edge.

[@g.dallasfagan2141]

Looks like concrete!

[@nigelsmith721]

Someone has ordered WAY too much concrete.

[@DrAhmedAdam]

Thank you for standing there for a full 15 minutes recording, so that the whole world can witness this amazing spectacle in nature

[@bazza945]

The mountain disintegrates.

[@maxpower8916]

Amazing. The power of water is nothing to laugh at. Looks like some mountain upstream is slowly disintegrating.

[@brodyjeremiah9848]

instablaster.

[@jlmoo1]

wow looks like concrete flowing. Massive bolder the power of mother nature here. great video cool

[@sandythompson8331]

15 minutes of amazing awesomeness.

[@richrepublican3493]

Someone must be destroying a mountain upstream.

[@k.r.baylor8825]

It's either God, the Almighty, Mother Nature, or gravity. Whomever is doing it, it is impressive. The mountain has only been doing this since the 1300s, believe it or not.

[@Z0RDR4CK]

he also took a closer look to the mountains behind if they are still there :D

[@allenpeck8239]

I Imagine that whole experience would be so visceral. Not only the sight of it, think about it, but it smell from the wind of its surge. You’d have to feel way down deep inside you the rumbling in the earth from those boulders- Definitely, you would feel that. It would be incredible to witness. I would love to see that before I die

[@hectorpascale1013]

Hmm, take a 3 month holiday in Switzerland. Middle of May to middle August should do the job ;) Maybe the end of July would condense this to a 2 week holiday: 28.07.2014, 22.07.2016, 25.07.2018, 26.07.2019, 28.07.2020

[@allenpeck8239]

@@hectorpascale1013 I'm assuming that is a pretty accurate timetable for the flood runoff to come down out of the mountains? So that I may see, what I wish to see? Thank you very much

[@hectorpascale1013]

@@allenpeck8239 The dates are taken from the videos of this channel. Of course there are events in may, june or August too, but the accumulation in the last 10 days of july over these years is very signigicant. Actuallay what you need in the area is a thunderstorm with lot of prepicitation in a short time in the bowl area , and these are more likely in warm and humid conditions. The material transportet may be the most though in the first events after winter, because they move the debris out of the canyon, which accumulatet in the winter by frost blast and avalanches.

[@kasisoot]

Amazing that something so violent can be so calming.

[@pierre-emmanuelzufferey1470]

J'ai donné des noms aux 3 premiers gros blocs afin de les retrouver dans le Rhône. Le plus gros est Mecalo, L. 6m poids évalué 150 T. apparaît à la minute 0:40 Vue du bloc dans le Rhône : kzbin.info/www/bejne/oYWsiZlnmtGMr6s, kzbin.info/www/bejne/oYWsiZlnmtGMr6s ; kzbin.info/www/bejne/g4G5n5ewiL96p6M

[@swithinbarclay4797]

For "Pierre": It is simply astonishing, the extreme dangers that the authorities faced, in the construction of these illgraben channels designed to protect lives, property, and lands downstream. They had to work, knowing that this stuff could come hammering down at any time, any second, with the certainty that they could be killed, and that any improvements that they had so far accomplished, could be destroyed in seconds. I noticed in the "dump pit" at the base of the concrete lip, seemed to be catching most of the boulders, as only a finer slurry was flowing below them. So, they could present a big problem, once the flow stops. They could hold back subsequent materials, causing nasty bursts that may overwhelm the system, with unintended consequences. So, when the flow stops, do men . . . demolition experts . . . slowly and carefully blast away at the boulder piles?

[@maryjaynemay4214]

It's incredible how those HUGE boulders explode like that after going over the falls. WOW..!! 😲

[@chrspappas3612]

"Kind of reminds me of a Heavy Night Of Drinking, then Eating At Tee-Jays, Then The Inevitable"... 😁

[@euchiron]

The mud fountaining back up after the drop is just as impressive as the boulders ... such power

[@cditzler6313]

those 1st few rocks were bigger than my house thats crazy

[@maryjaynemay4214]

I can't take my eyes off the mountain in the background. All of it. Stunning!! What an awesome experience for us all. And then the boulder bombs! Crazy cool man!! The engineering is so natural...beautiful! Good work. Thank you

[@RobDeVos101]

In the left upper corner of the video I see a flashing light, is there an (automated) warning system for these events?

[@pierre-emmanuelzufferey1470]

Yes it is an automatical warning system based on hight of the flow and sismograph. You have 15 to 30 minutes to go away.

[@alexanderwingeskog758]

Looks like cement almost. The big rocks in the beginning! crazy big size and it looked like they had the weight of a beach ball or something. Awesome!

[@Stringman1950]

The size of those boulders is amazing.

[@johnpartridge7623]

Mother Nature is so impressive & powerful 👍

[@Cabbie407]

How he gasped when he saw those rocks at the front

[@bazza945]

Yes, agree.

[@owl1873]

Floating Boulders, totally Awesome.

[@sugarysnax2958]

I love watching these things. Here's my theory on debris flow. The coefficient of friction is different for an object that is moving than one that is stationary. That's why when you're braking on a rainy day, you'll feel the car slowing and then you'll exceed the limits and the car appears to lurch in whatever direction gravity takes it. You can't just hit the brakes again and expect the car to slow. You have to deal with an object which is effectively more slippery than it was moments before even though its the same wet object. Before you lost control your tire was rolling at the same rate of speed. As it rolled, the tire kept pace with the tar moving past below. Now that you're skidding the tire isn't moving and the tar is going by very fast. The coefficient of friction is different. To get control back you have to pump the brakes or let your car equipped with traction control do it at high speed. Eventually your tire will once again be rolling along as fast as the road is sliding past and the old coefficient of friction will be in place along with control. Its the same with the boulders coming down the hill. Rolling, they're wet and somewhat supported by the thick goo which has momentum. Friction on the huge boulder is low. If they land on a flat side, there will be a lot more friction, but they still have the weight of all that goo pushing them ahead and goo underneath as well as a slimy surface under that. That's why they keep rolling and sliding, lower coefficient of friction and pressure from upstream and lower friction with surface. If the boulder topples onto one of it's flat sides and hits a dry level spot it most likely won't be moving again unless the upstream stuff hits it in a big mass. The next time you're standing next to a steep mountain or a cliff and you wonder why you aren't being covered in stone, its because of the coefficient of friction holding things together. That can change with a lot of rain or a shock that causes a tiny amount of movement. Suddenly the moving coefficient of friction will be put into place and you had better not be standing there because millions of tons will only stop when they run out of momentum or into lots of friction.

[@andyhughes5885]

Were you standing on roller skates filming this ? Try keeping the camera steady please.

[@marcelwildeboer]

Nature cannot be tamed and does what it wants.

[@holymoly6829]

Fascinating video ! It sends me into a frame of mind that I can’t stop watching it 🤷‍♂️🤷‍♂️🤷‍♂️🤷‍♂️

[@SuperLoops]

omg huge boulders getting rolled down the stream :(

[@lindaj5492]

Looks like those huge boulders might have been causing a blockage higher up, for so many to come through at once at the beginning of the flow? There’s a lot of splashing in the same position in the s-bend near the top of the flow that maybe is another big boulder stuck in a depression?

[@jamesodonnell4771]

Now imagine this 100s even 1000s of times more powerful and more voluminous post ice age glacier melting..

[@STEN3326]

Ca me fait penser à du lait chocolaté avec des grumeaux de chocolat ^^ :)

[@huberthoudroy5661]

Ces blocs ralentis tendent à se déposer sur le fond, ou n'avancent que par reptation et non par saltation (comme on dit pour la neige ou le sable dans le vent). La boue et l'eau tendent à les submerger. Mais quand la boue et l'eau accélèrent, et s'insinuent entre des blocs éparpillés, leur flux est de moins en moins laminaire, de plus en plus turbulent. Les blocs déposés sont à nouveau déplacés, absorbant par leur mouvement une partie de l'énergie cinétique de la matrice boueuse. Déplacés un à un, les blocs submergés tendent à former un massif de blocs sur le plancher. (Ch. Blanchet, "Formation et destruction par un courant d'eau de massifs en pierres", in La Houille Blanche, 1946). D'où un véritable dallage sur le fond du thalweg ou chenal torrentiel. Passant sur ce dallage, la lave torrentielle est plus à même de déborder du chenal. Mais les débordements latéraux sont rapidement immobilisés. On constate une élévation et un élargissement de la surface de la lave ; lave dont la partie médiane est la plus dynamique. Des massifs de blocs submergés peuvent générer un amas immobile de blocs rocheux encastrés entre eux. Ces amas immobiles de blocs rocheux encastrés s'allongent par sédimentation d'aval en amont. En conséquence, le débordement latéral de la lave remonte aussi vers l'amont. Sur une vaste zone, les gros blocs sont de moins en moins visibles à la surface. Vu de dessus, on semble assister à une coulée de boue, chargée de galets et de cailloutis. Mais, de temps en temps, des gros blocs rocheux sont à nouveau visibles : soit qu'ils roulent sur le dallage de blocs, soit qu'ils aient été arrachés de ce dallage. Ce sont : soit les blocs amont du dallage qui sont arrachés et qui roulent sur tout les autres, soit le bloc le plus aval qui est emporté, amorçant un démantèlement régressif du dallage. Le démantèlement régressif du dallage semble le cas le plus probable quand on voit de plus en plus de gros blocs isolés franchir le mur, tandis que la surface de la lave s'abaisse et amenuise son aire (superficie). Tant que les gros blocs rocheux détachés du dallage sont espacés, un nouvel amas mobile de blocs rocheux encastrés ne peut pas se produire. La lave torrentielle reste laminaire, en régime de croisière. On assiste alors à un démantèlement régressif (érosion régressive) du dallage constitué précèdemment par sédimentation de blocs d'aval en amont. Si plusieurs gros blocs rocheux sont détachés du dallage simultanément, ils peuvent générer un nouvel amas mobile de blocs rocheux encastrés. Une alternance de sédimentation de gros bloc en dallage et de démantèlement du dallage peut produire le rythme des bouffées torrentielles qui est l'originalité des laves torrentielles.

[@kathrynmccluskey3207]

Where is a drone when you really want know what is happening ten miles up the gully?

[@juliendufour4513]

Le travail de deblaiement est titanesque pour remettre le lit de cette lave torrentielle en état d'acqueillir la prochaine.

[@craig5414]

I wish I could see pictures before and after of the creekbed. I wonder how much this event changed it.

[@sharonolsen6579]

This is unreal ! It looks like massive amounts of freshly mixed concrete flowing down the mountain ...

[@huberthoudroy5661]

La boue ne réussit pas à s'infiltrer entre les blocs rocheux et à y créer une pression interstitielle qui contribuerait à les écarter un peu plus et à disloquer le front rocheux de la lave. Les blocs ont des formes telles que la face aval qui subit la poussée de la matrice boueuse n'influence pas son comportement (avance, soulèvement par portance, abaissement par recouvrement). A l'arrière du front, on devine des blocs partiellement submergés, qui sont moins rapides que la matrice boueuse, dont les flux décollent en les dépassant, ce qui provoque des turbulences visibles en surface.

[@sylviaporchet9071]

Moi,je pense que le village Susten pourrais bien être en danger , Les laves sont de plus en plus impresionantes, On pourrais ( comme c'est dej'à fait) mettre des protections Mais c'est la nature qui aura le dernier mot.

[@timbruns3818]

INCREDIBLE. I’d like to know where that all ended up. Great Video Thanks For Sharing. * 1-24-2024

[@Johnboy33545]

Several of his videos give great views of the torrent and its intersection with the Rhone, watch a few more. The ones showing the origins are worth a watch too.

[@rodneywroten2994]

wow big dozers could not push around bolders like that

[@chriswatts1909]

I didn’t realise the power of water before this clip.

[@wehvgirlpwr]

I’d love to have some of that dirt in my garden.

[@MrDougster37]

Man, that Taco Bell is just too much sometimes...

[@kellwood1404]

Incredible. Those boulders.

[@marcostelzer8737]

Ist das gewaltig :O Sehr gut festgehalten :-D nice vid ;-)

[@АлексейБойченко-ь7ф]

Строительный раствор прыбыл ...можно строить дома😀😀

[@zeyoutubber787]

Well done, erm filmed Pierre. The movie of the Illgraben flood of 2000 and also 2014 is quite spectacular with its fast, compact front, but this on can top it in some aspects. Especially the tremendous push force able to move those giant blocs of several m3 in the front.

[@dapto234]

if that was grey instead of brown it would be like its ready to pour a slab of concrete

[@charleslangley6036]

Me, after eating at Taco Bell.

[@MrAppie9090]

You have hard pieces in that torrent of shit?

[@urrutiamusic1599]

Estoy impresionado que fuerza lleva esa corriente, buen trabajo amigo. saludos, te apoyo en tu canal. Saludos.

[@wazeysusaventuras]

Dios mio el tamaño de esas rocas es impresionante y la grande crecida de ese rio

[@kongthao9935]

Anyone caught in that mudslide would be grounded into red mud. Maybe lucky enough to stay in one piece and fossilized.

[@jeffross5424]

want to view this as well...when is the best time...season to witness this raging mud flow?

[@pierre-emmanuelzufferey1470]

28th of may to 8th of september... but now with global heating....

[@jeffross5424]

@@pierre-emmanuelzufferey1470 thanks!

[@karengiorella2690]

Glad this channel showed up in my feed. That's not something you see everyday. So mesmerizing.

[@chumline577]

That would be bad if you were standing in that creek bed and looked over your shoulder and saw that coming your way,

[@lindimaitar]

there is an Alarm System for exactly this!

[@FlyboyUS]

Looks like a running concrete River

[@calvina.6853]

Beängstigend..... Sehr krasses Video. Danke fürs einstellen.

[@michelemarcolin2548]

Damn! Those are some boulders!

[@SuperLoops]

where does it all come from and why is it so sudden

[@Johnboy33545]

Torrential rain scours the mountains visible in the background. This is a regular seasonal event. They're mesmerizing to watch.

[@elnabjelland-hughes8172]

Where did all those boulders come from? Awesome video !

[@pierre-emmanuelzufferey1470]

Look at my video : Illgraben - Sight from above....

[@mattiaranzanici8105]

Catch & Release forever!!!! Save the fishes!!!! Few days later.....

[@huberthoudroy5661]

Merci pour ces images très instructives. Le front de cette lave torrentielle est constitué par un "amas mobile de blocs rocheux encastrés". Les blocs rocheux ne sont pas identiques, comme le seraient des pavés auto-bloquants, ni semblables, comme des pièces de puzzle. Néanmoins, ils forment une sorte d'encastrement mutuel, dans lequel chaque bloc du front trouve à s'encastrer dans les autres, en se remplaçant dynamiquement. Cet encastrement mutuel dynamique permet à cet ensemble de blocs volumineux de ne pas être dépassé par la matrice boueuse dense, ni submergé par une vague d'eau plus rapide, ce qui finirait par assécher la matrice, la ralentir voire l'immobiliser. Tant que les gros blocs ne sont dépassés ni par l'eau ni par la matrice, le processus de lave torrentielle s'entretient.

[@AllahuAqbarALLAH-999]

Merci pour cette éclaircissement ! 👍 سبحان الله العظيم 🌹

[@huberthoudroy5661]

@@AllahuAqbarALLAH-999 Cela fait des années que je cherche à comprendre comment des laves torrentielles se sont formées, pendant les Glaciations, sous une petite calotte glaciaire et comment certaines d'entre elles, datant de 13 à 15 000 ans, se sont arretées en pleine pente?

[@AllahuAqbarALLAH-999]

@@huberthoudroy5661 c'est bien d'essayer de comprendre bravo ! Moi je visionne bcp aussi ces phénomènes qui se répandent de plus en plus... Très intéressant ! 👍 سبحان الله العظيم 🌹

[@huberthoudroy5661]

@@AllahuAqbarALLAH-999 Merci

[@AllahuAqbarALLAH-999]

@@huberthoudroy5661 quand vous aurez trouvé la solution faites moi signe ! 👍 Bonne journée à vous ! سبحان الله العظيم 🌹

[@christophernguyen8083]

Where is it going? Because if it is going to the ocean then it is going to be an ocean of mud.

[@roderickwheatley9946]

It flows into the Rhone

[@Johnboy33545]

Have you heard the phrase a drop in the bucket?

[@goik3799]

Anda beruntung dapat merekam dengan hebat peristiwa ini...👍👍👍👍👍

[@Scrat335]

A river of concrete.

[@hallerd]

It appears that the composition of the mud changes over the duration of the flow

[@pippastone6018]

An earthy rock crusher at maximum speed, awesome 😎 brilliant 😎👍🇳🇿😎

[@geoffreylee5199]

Whoa ... those are some massive stones ...

[@alvarofortunatosamayoa8640]

Nice video, the power of the almighty God, creator of wonders, thanks.

[@williammorris4327]

If you ever wondered how the grand canyon was formed......well

[@ddyeo503]

I wonder how many dump trucks this one flow would fill?

[@mustafizahamed6953]

So now we know how much helpless we are infront of nature. Just can't express the felling.

[@benjaminlange868]

A few small kidney stones after a homeopathic treatment.

[@shayleebell9206]

some serious rocks at the front edge.. the rest looks like a bad curry day

[@ragersgonnarage52]

looks like a cement chute

[@Royalchess1]

Yum...chunky chocolate milkshake!!

[@XenoFireStar]

That is causing the fog where the flow goes over that wall? Is there so much friction that it is steaming? Or so much pressure that vapor is forming? 'Cause it isn't dust, wrong color and too wet.

[@hectorpascale1013]

I assume it is steaming. Look @4:30, one can see the bubbles rise out of the sludge, like fumes out of Lava. I guess behind/down the "weir" something like a rotor/washing machine is formed like with pure water, crushing the blocks, +friction and pressure, as you said, producing enough heat to evaporate some water. In this video @9:30 it is steaming even more, and Monsieur Zufferey points out the crushing kzbin.info/www/bejne/oXebiKKEgpdmrbs In this video @1:50: one can see the "washing machine" with backflow where the sludgefall hits the lower level. Behaves like water, but is at least 2x as dense. I imagine some vapor here as well.

[@АнастасіяМеліка-г8и]

Maybe it's dust from crushed stones. Just imagine power those rocks hitting river bad with.

[@gabrielrose-gonzalez4421]

It isn’t steam. It’s rocks smashing down into other rocks and pulverizing them. It’s dust exploding up and out of the mud with all that force. The mud covers most of the rocks, but there are HUGE rocks we can’t see flowing just beneath the mud that smash together when they go over the edge, creating that white/grey dust.

[@Johnboy33545]

It is dust. The flow apologizes for not meeting your expectations of color.

[@EdiHandoyo55]

Bisa² nya aku lihat sampai selesai 😂😂😂

[@MetalFranzi]

Gibt es irgendwann neue Videos vom Illgraben oder keine Zeit 😉

[@franciscorogerio1339]

Assustador!!!!🥺

[@anne-juliavoillat-sauer2124]

Très impressionant! On se sent vraiment très petit et très fragile face à une telle puissance.

[@pierre-emmanuelzufferey1470]

Très petit. Au loin on entend comme des coups de tonnerre. Etait-ce un éclair. Puis la terre tremble et le cameraman aussi. Qu'est ce que je dois faire. Décamper. Puis la fascination l'emporte. La respiration s'arrête. Une petite tache sur l'objectif, les roches se font broyer, la fumée blanche, et des éclats de boues qui giclent. Enfin le gros du front géant est passé, le cameraman respire à nouveau, trois grandes inspirations, expirations.

[@bryanleslie4513]

Well the state wouldn't have to move those boulders far, the river is doing all the work.

[@דודעובדקדוש]

Beautiful video can you comment me please what is the location of this river?

[@pierre-emmanuelzufferey1470]

Illgraben, Susten/ Leuk in Swizzerland, look at my other videos on my KZbin channel.

[@CarlosOcampo-su3br]

😎😎😎😎😎👍👍👍👍👍👍

[@nal2002]

Runn🏃‍♂🏃‍♂

[@markmark2080]

Makes a Caterpillar D11 dozer look like a Matchbox toy...

[@fabvisunature]

Très impressionnant.

[@guillermomorenomadrigal2706]

fe25.OOO 9

[@guillermomorenomadrigal2706]

p

[@fernandopiaba1]

Sítio Carrapateira. Venturosa - PE Brasil kzbin.info/www/bejne/gpXCeZWAp6mah6c

[@jacquelinewyderbesson5425]

Ce film m'évoque des souvenirs de mon enfance, car j'ai habité à Pletschen et notre maison se situait à 150 mètres de l'Illgraben. Quand nous l'étendons, nous sortons pour aller le voir et nous disons: "Där Illgrabu chunt" Impressionnant!

[@pierre-emmanuelzufferey1470]

Je connaissais le monstre depuis en haut car notre famille avons un chalet à Pramarin. Il parait que mes parents s'étaient arrêtés une fois après le pont de Susten pendant un orage, mon père connaissant les conditions favorables pour la formation des laves car il était ingénieur au téléphone et s’était occupé du passage des câbles sur le site. Ma mère me raconte que c'était un mur qui avançait à pas d'homme et qui faisait un bruit épouvantable. J'y étais aussi mais je n'ai aucun souvenir, je pense que j'étais sous le choc mais que cela a dû rester dans mon subconscient. A Pletschen les maisons devaient trembler parfois. Il faut penser qu'avant il n'y avait pas les murs le long du lit du torrent et qu'il n'y avait pas tout le système d'alarme et de surveillance.

[@Newworld12660]

I thought my bathroom episodes were runny, but this is too much!

[@MrRedman66]

The power of water and mud. Can move mountains. WoW!

[@normandlemire7566]

As-tu mis ta caméra à côté d'une friteuse ? . . .

[@GabiMüller-q3w]

Sound of rain :)

[@retobaumann7192]

Bonjour M. ZuffereyCette lave torrentielle est impressionnante. Notre section "Glissements de terrain, avalanches et forêts protectrices", OFEV s'occupe de ces phénomènes. Je participerais à un congrès le septembre prochain en valais et j'aimerais utiliser votre video dans ma présentation. Est-ce que vous prenez contact avec moi pour discuter vos conditions?058/4647838

[@pierre-emmanuelzufferey1470]

Bonjour Monsieur Baumann. Merci pour votre intérêt. J'ai mis ma vidéo sous protection de droit d'auteur et licence pour tout ce qui est utilisation à large diffusion, émissions télévisées et utilisation à but lucratif. Pour obtenir les images et de plus amples renseignements, il faudrait contacter : [e-mail]. En vous remerciant pour votre travail, veuillez accepter, Monsieur Baumann, mes meilleures salutations. Pierre Zufferey

[@philbox4566]

Breakdown at the cement plant. ;)

[@mishikhan8400]

What type of red light is that?blinking on left side

[@pierre-emmanuelzufferey1470]

Alarm system, light and sound alarm… about 15 minutes before it comes.