Section 444
Do not know why.
There is actually a medium-sized cave there that leads directly into the mountain!
Because the light is too dark.
Lying on the ground and looking inside, it was impossible to see clearly what was going on inside.
Only a little bit of light can be seen.
It seems.
It should be water light.
Squinting his eyes, Lu Yu looked attentively for a while, then murmured:
"Bros……"
"There should be an underground river below here."
underground river.
That is, "undercurrent".
Due to karstification, the flow of water in the caves and underground channels formed in large areas of limestone has the main characteristics of rivers.
Twin Mountains conforms to the geographical origin of underground rivers.
Abundant groundwater circulation is why a natural spring gushes out day and night.
All thanks to this.
Therefore, it is not surprising at all that there are rivers in the mountains.
Secondly, the hot and rainy tropical climate is also conducive to the formation of underground rivers.
In the live broadcast room.
After listening to Lu Yu’s words, the audience started barrage:
"underground river?"
"Leap of Faith, Ready!"
"Damn it, Yu Shen is not going to jump from here, is he?"
"If the anchor dares to jump, I will give him ten super hits today!"
"I'll swipe twenty!"
"Jump down and seek death?"
I took a look at the barrage in the live broadcast room.
Lu Yu chuckled.
Faced with the complaints from the audience, he waved his hands repeatedly:
"A few hundred meters away, even if there is water below, you will die if you jump."
"Let alone hundreds of meters, even if you jump into the water from a few dozen meters, the fatality rate is as high as 90%."
"At this height, there is no difference between the water surface and the ground. It can range from a bruised nose and swollen face to death on the spot."
“In 2016, a train in North America exploded on a transcontinental bridge more than ten meters high. At that time, a white passenger in the explosion car smashed the window in order to escape and wanted to jump into the river. In the end, although this guy managed to escape, he was immediately admitted to the ICU and barely survived. He may spend the rest of his life in a wheelchair. "
"So, don't do this unless it's an emergency. For ordinary people without professional training, jumping a dozen meters is already so dangerous, let alone a height of several hundred meters, unless you are impatient... "
The underground river in the cave.
There's nothing special about it.
But in the dark.
In addition to the flowing river water, through observation, Lu Yu also noticed a very subtle detail.
The lower left side of the line of sight.
That is the deepest part of the cave wall.
There seemed to be something shining.
However, due to the limited light, it was impossible to see what was happening.
"Brothers, there seems to be something down there."
After adjusting the drone's lens, Lu Yu focused on the cave, trying to show the audience his new discovery.
However.
The distance is too far.
Even if the shot is lengthened, the audience is still confused.
Upon seeing this, Lu Yu immediately turned on the night vision function of the drone.
Control it with your mind, let it fly slowly into the cave, and investigate.
The inner wall of the cave was very humid, with many water droplets condensing on it.
Densely packed.
Just don’t look at it.
Just looking at it is enough to give you goosebumps.
against the cave wall.
The drone went all the way down.
After a while, they arrived at the bottom of the cave.
in the screen.
The depth of the underground river is unknown.
But the flow rate is extremely fast.
The space occupied is also very large.
All the way down, I don’t know where it leads.
“The spatial distribution of underground rivers is controlled by lithology, geological structure, and drainage base levels.”
"Underground rivers often develop at the axes of stratigraphic folds, fissures and fractures, at the contact between soluble rock and non-soluble rock, and near the drainage base level."
"However, underground rivers have their own supply, runoff, and established drainage systems. After long geological changes, extremely developed underground river systems are usually formed. Underground rivers and undercurrents are not only important water sources in karst areas, but also in some limestone mountains. "
The development and shape of underground rivers are often controlled by geological structures and fissures.
The morphological characteristics are very complex and chaotic.
Some are branch-shaped.
Some are jagged.
Some are linear.
Others are mesh-like.
But no matter what, in this huge underground water system, each underground river will have its own supply and discharge channels.
Multiple disconnected underground rivers can also develop in the same aquifer.
Therefore, the river in front of us is most likely the smallest one in Olidia's underground water system.
Look at the flow rate.
Preliminary estimates.
The entire basin area of the underground river is at least 1,000km.
In other words, it’s not just Twin Mountains.
All over the North Shore and even somewhere on the West Coast.
There may be similar underground rivers!
Lu Yu explained kung fu to the audience.
The drone flew quietly along the river.
Except for the water flowing around, there was almost no sound.
On both sides of the river, the space is very tight.
At most, it can accommodate one person walking sideways.
in the dark.
The live broadcast screen followed slowly.
In a blink of an eye, I arrived and found the luminous point.
He stretched out the lens and checked.
turn out to be.
The glowing point that Lu Yu saw was not something else, but a decayed iron box.
The pattern on the box is extremely retro.
Covered with rust.
But even so.
You can still see the general appearance and the patterns carved on it.
After observing for a while, Lu Yu found himself in the black and white night vision lens.
I vaguely saw a very clear scale-like sign.
When he fixed his eyes, Lu Yu swallowed his saliva, shook his head and murmured:
"Guys, do you see that sign?"
The words are not finished yet.
The drone lens comes into focus.