The Longyou Caves | The Secrets of China’s Underground Labyrinth

The Longyou Caves in China. In 1992, in the quaint village of Shiyan Beicun in Zhejiang Province, China, an extraordinary discovery was made. A farmer named Wu Anai, while draining a pond, stumbled upon a vast underground network of ancient caves that would soon captivate historians and archaeologists worldwide. These came to be known as the Longyou Caves.

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[sierrarose]

As soon as I hear "How did a civilization from thousands of years ago have the knowledge and technology to achieve such a feat" I tune out. The people living back then weren't morons. There are so many examples of people back then being to undertake these huge projects.

[mechannel]

Please also have your guys in China make videos of the newly discovered gigantic pyramids in Guizhou Province 🙏🙏🙏

[rodolfogiunta]

Nos cuesta aceptar..que los retrasados"..SOMOS NOSOTROS..!
Aquello sucedido "antes".. es una muestra de lo posible o potencial..
(Siempre y cuando no nos auto destruyamos..)💥

[snowmiaow]

Soooo tired of the lack of technology of the ancients. Clearly, they had enough to do what they did.

[hyde]

Horse, Bird, and Fish… hmmm air, land, and sea?? Lmao.

[francafranca]

Este local deve ter uma acústica incrível 🤔

[ChristopherStendeck]

This is the Red Clouds Golden Summit on Mount Fanjing. Two temples built on a rock pillar are thought to date to the Ming Dynasty. The video here has been horizontally compressed to make it look a lot taller and thinner than it is, but of course it's still very impressive to think of those fearless people who built them and the staircase to the top.

[butchmitch]

2:06 horse bird fish are symbols for earth air water.
One imagines a 🔥 there to complete the portal

[mimet]

Could you make a video about the artifacts found here?

[ronp]

These caves have the now well known scoop and scratch marks. bizzare. hail the ancient builders.

[Hubris]

Why do we think our ancients were incapable until proven otherwise?

[owendurant]

Looks like natural caves that were reworked into cisterns. The ability to work with stone at a high level in mostly forgotten. If you want to see some really impressive ancient stonework, look to India. I'm highly suspicious of the carvings, they seem like a very modern addition.

[GizzyDillespee]

Maybe cave 1 was the famous ancient restaurant Horse Bird Fish? Cave 2 would be a... recording studio?🤣 That's the only place I've seen such rough walls on purpose. The purpose is called diffusion, and its goal is to help mitigate room modes. The size and shape of a room will encourage standing waves to form at specific frequencies when you make a sound in a room. Moving around and listening within the room, you get loud spots and quiet spots around each frequency that the size and shape of a room determines it will resonate at. There is software that will calculate room modes, and they even have software that uses something akin to ray tracing, but for sound, to show how the sound bounces, from one or more sources, off of the various flat surfaces in and of the room.

Aside from changing the room dimensions, and the size shape and location of the large surfaces within the room, and localizing the sound source, we also can manipulate the sound via absorption and diffusion. Absorption means placing sound absorbing material, such as rock wool, at the likely reflection points around the room. Diffusion means changing your flat surfaces into very rough or irregular surfaces, which scatter the sound energy in various different directions. Ideally, you'd want a layer of softer absorption material in the corners, if not covering the entire surface, especially the floor... assuming that the goal was to hide a large group of people with as little sound escaping as possible. I'm only guessing one possible use case (and that could be prisoners/slaves, or it could be your population hiding from some invader or disaster.

These caves' construction could be unrelated to that guess. Maybe the design, emphasizing the chisel marks, could be artistic, reflecting the culture's iconography. I still wonder how they lit the place, in construction and possibly in usage, without creating massive soot deposits...

Unless the chisel marks are from later people harvesting the soot for ink. Nobody ever mentions mundane explanations such as that (which doesn't explain tye original construction, but explains why there wasn't any soot or artifacts when it was reopened in modern times).

[midnightmosesuk]

It's a cistern. The lines in the walls are measures for the depth of the water so that the volume could be calculated.

[mechannel]

These caves are much older than 2000 years. There are machine marks on the cave walls and ceilings. They must have been created by a lost civilization with advanced technologies

[rhinorooney]

That wasn't done with simple tools. Common sense tells me that

[tonyrodriguez]

You can clearly see that this was machine work the ancient people used machines We're looking at a civilization that was during the Vapor canopy when everything grew big and the technology was way sophisticated than we can think

[aresina]

Yo pienso que en una época muy antigua que el clima era insoportable, estos lugares eran un refugio, asi como pienso que las estatuas gigantes alrededor del mundo sirvieron para ahuyentar animales de igual tamaño como tipo "espantapájaros", hace mucho, mucho tiempo.

[lokeshp]

Nice work... Very interesting and thought provoking... Keep up your research and share the knowledge.. 😊

[edsondiasribeirosoares]

Aqui vai uma observação ao YouTube: Por favor, para facilitar o entendimento do que se explica nesse vídeo ou qualquer outro em língua estrangeira, por favor coloque uma tecla para tradução a lingua local !!