• 2 months ago
Une nouvelle découverte dans les pyramides d'Égypte a conduit les experts à repenser tout ce qu'ils pensaient savoir. Les scientifiques ont récemment trouvé des chambres cachées profondément à l'intérieur de la Grande Pyramide de Gizeh en utilisant une technologie de scan avancée. Ces pièces n'ont jamais été explorées et pourraient révéler des secrets sur la manière dont la pyramide a été construite ou sur son utilisation. Cette découverte est enthousiasmante car elle ouvre la possibilité de nouveaux trésors ou d'indices historiques cachés dans le monument le plus célèbre d'Égypte. Les chercheurs planifient maintenant comment explorer soigneusement ces chambres sans endommager la structure ancienne. Cette découverte pourrait complètement changer notre compréhension de l'Égypte antique ! Animation créée par Sympa.
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00:00Most people know that the pyramids were built to serve as tombs to the pharaohs in order to provide them with a journey without trouble to the afterlife.
00:09The Great Pyramid of Gizesh, for example, was built for the pharaoh Cheops.
00:14But what most people do not know is that this tradition of building pyramids began right here, with the Pyramid of Degres of Djezer, about 4,700 years ago.
00:25This massive structure was built for the pharaoh Djezer, a ruler of the 3rd Egyptian dynasty.
00:31It rises on six levels above the ground and measures about 60 meters high.
00:36Today we consider it a phenomenal architectural project.
00:40But for the ancient Egyptians, the Pyramid of Degres of Djezer was rather a vast experience.
00:46A test, so to speak, intended to perfect their building skills before moving on to even more ambitious pyramids.
00:55Reaching new heights is very exciting, but the real mystery lies in what happens underground.
01:01In the underground labyrinth of this pyramid, a network of tunnels extends for about 5.5 km.
01:08Some researchers think that these tunnels could have been part of a very sophisticated water supply system, and this could completely change our vision of the construction of pyramids.
01:18Let's talk about this massive complex located in Saqqara.
01:21Around the pyramid, there is what is called a Douve Seche, a continuous trench that is about 50 meters wide and nearly 3 km long.
01:31It forms a kind of rectangle around the pyramid.
01:34This trench has an average depth of about 20 meters.
01:38If we add all the earth and the rock dug to create this douve, it represents about ten times the volume of the pyramid itself.
01:47For a long time, people thought that this trench was nothing more than a huge quarry.
01:52A place where they had extracted stone and clay to build the Pyramid of Degres.
01:57It makes sense, doesn't it?
01:58But looking closer, we realized that it was nothing.
02:02The trench is too narrow and too deep to have been exploited.
02:06And its layout does not correspond to anything we know about the methods of extraction of ancient Egypt.
02:11In addition, some sections of the trench are covered with a rocky ceiling, which would have made its use as a quarry practically impossible.
02:21A theory suggests that the Douve Seche had a spiritual meaning.
02:25It may have been a sacred place where the souls of the nobles met to serve the late king in the afterlife.
02:31Niches in the walls evoke this spiritual function.
02:34But most researchers think that it was only developed much later, long after the construction of the complex.
02:42So, what was the Douve really for?
02:44In 2020, a researcher came up with a rather intriguing idea.
02:48It is possible that this trench was designed to collect and channel water.
02:53Especially after heavy rain.
02:55It seems logical if we consider its location.
02:58The Douve is located in an area that could easily have been flooded by streaming waters from neighboring plains.
03:05This could also explain why the trench was not used for new tombs until much later,
03:11when the climate has become drier and the site less subject to floods.
03:16But the story becomes even more fascinating.
03:19Because this trench seems to be part of a wider and more elaborate hydraulic system inside the Geyser complex.
03:26It is as if it contained several compartments, carefully carved in the rock and connected by tunnels.
03:33These compartments were probably part of a water treatment system.
03:37The water flowed from one compartment to another, purifying itself as it progressed.
03:44This is where things start to relate to the pyramid itself.
03:48The Geyser complex contains a series of underground wells.
03:53And some researchers think that the water from the Douve could have been used to power a hydraulic lift system.
03:59This giant hydraulic lift would then have been used to lift the heavy stones necessary for the construction of the pyramid.
04:06It worked like a volcano.
04:08But instead of lava, it was water that lifted the blocks of stone.
04:13Imagine a large deep hole in the ground in the center of the site of the pyramid.
04:18Inside this hole, there was a huge wooden platform.
04:22A bit like a giant raft that could go up and down.
04:25When the workers wanted to lift a heavy stone, they filled the hole with water.
04:30When the water level rose, the wooden platform began to float.
04:34Carrying the stone with it, a bit like a giant elevator.
04:38When the stone reached the right height, the workers slid it from the platform to the pyramid.
04:45The idea is that the water from the trench, after being cleaned and filtered, would have flowed into these wells.
04:52A huge float, maybe made of wood, then rose as the water filled the well,
04:58lifting the stones to the place where they were needed for the construction.
05:02Once the stone was in place, the water was evacuated and the platform descended, ready to lift the next stone.
05:09This sophisticated hydraulic lifting system could have changed things,
05:13making the whole construction process much faster and more efficient,
05:17and saving labor.
05:19It's as if the ancient Egyptians had already adopted the notion
05:23that working smarter is better than working harder.
05:27But of course, not everyone agrees with this theory.
05:30Some experts say that the area where the pyramid was built at Geyser level
05:35would not have been able to supply enough water.
05:37The rains were quite rare to maintain such an elaborate hydraulic system.
05:41The main theory suggests that there may have been a lake nearby,
05:45which would have been filled after each period of rain,
05:48and which would have supplied the water the complex needed for its hydraulic system.
05:54However, no writing in ancient Egypt mentions such a lake.
05:58It is therefore more of a hypothesis than a reality.
06:03And then there is the question of the work itself.
06:07Do you remember that I said that this method could have allowed the ancient builders
06:11to lift stones with much less effort?
06:14This may not be entirely true.
06:16According to some experts, the construction of this device
06:20would have required much more work than the simple movement of the stone blocks
06:24necessary for the construction of the monument.
06:27And let's not forget that the pyramid at Geyser level
06:30is relatively small compared to those that followed.
06:33The stones used weighed on average 300 kg each,
06:37which is nothing compared to the blocks of more than 2.5 tons
06:40later used for the Pyramid of Khefren.
06:44If we have to completely rule out this theory of the hydraulic lift,
06:48it remains for us to explain how this pyramid was built.
06:52To answer this question,
06:54we must go back a little and talk about the original plans.
06:58Before the Geyser tomb became a pyramid,
07:01the idea was to build a simple mastaba.
07:04This type of tomb was quite common in earlier periods.
07:08A rectangular structure with a flat roof with inclined sides.
07:12But once the original mastaba was finished,
07:15they decided to enlarge it a bit by adding a few additional layers.
07:19They then added more layers,
07:21until the construction reached six distinct levels,
07:24each smaller than the previous one.
07:27And they probably would have done all this
07:29by lifting these heavy stones using a bridge,
07:32and not a hydraulic lift.
07:34We still don't know a lot about the pyramid at Geyser level.
07:38Additional research is certainly necessary
07:41to understand how this system worked,
07:44or if it even existed.
07:46But the idea of using water to build a pyramid
07:49brings a new dimension to our understanding of ancient Egypt's engineering.
07:53This strongly reminds us of how smart and ingenious these builders were,
07:57taking advantage of the natural resources they had
08:00to create one of the most emblematic monuments in history.

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