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A few kilometers of road, Chen Xu spent a full hour and a half to walk through.

Along the way, there are more and more huge rocks, and there are even many mountain-like cliffs in front of you.

This is good news, and the more undulating the terrain is, the closer he is getting closer to the Ahagar Plateau in the central Sahara.

But again, the sun is rising.

The Sahara was already near the equator, the direct sunlight was at a large angle, and the desert absorbed heat quickly, and there was no shelter, which soon made him sweat a lot.

Fortunately, Chen Xu relied on El Alamangen and survived all the way to the present.

Although these 10 or so grass roots are far from making up for the large amount of water lost, they can at least keep his mouth moist, relieve the feeling of thirst, and give him more energy to rush.

"Whew...... It's noon now, and the temperature is estimated to be over 50 degrees, so we have to find a shady place to escape the heat in time, and if we see that there is no cliff in front of us, we will go there!"

Chen Xu grinned, swallowed the Alamangan that had already been chewed dry in his mouth, and then took out another one from his pocket.

This is also the last one he has left.

He cut the skin with the tip of his knife, carefully plucked out the flesh, and held it in his mouth, for fear of wasting a little water.

Fifteen minutes later, he finally reached the edge of the cliff.

It is a huge cliff, the length can be said to be endless, the height is about twenty or thirty meters, it is composed of sand and rocky desert soil, mixed with a lot of black gravel.

Chen Xu walked over, pointed to some white lines on one of the huge black stones, and said, "You see, the white things in these stones are actually animal corpses, that is, ancient ocean fossils. ”

"That's right, according to scientists, the Sahara was actually an ocean before ancient times, and it was about 7 million to 11 million years ago that the Tethys Sea contracted to gradually cause it to become a desert. ”

The audience was a little surprised when they heard Xu Ye's explanation.

Who would have thought that a long time ago, the world's largest desert of death would be a riverbed of the ocean full of life.

Now, all around it are barren cliffs, black stones, and cracked and water-starved ground.

Chen Xu just finished speaking for a few seconds.

Suddenly, there was a few sparse crumbling noises from above.

When he looked up, it turned out that several small clods of earth had fallen from the cliff face.

As he watched, several more rocks fell, one of which hit his head.

Chen Xu hurriedly retreated backwards, carefully avoiding it.

"The fact that these ancient marine fossils on the cliff face should have been buried deep in the ground but ended up on the ground suggests that there have been crustal movements, such as earthquakes, in the area. ”

"Whether it's the wind, the trampling and vibration of animals, or the expansion of rocks caused by sunlight, we can't stay here for too long, it's unstable here, and it's easy to produce large areas of landslides!"

With that, he moved away from the cliff face, ready to find shade again nearby.

After walking for a while, he found a ravine in front of him and walked in.

As soon as he entered the canyon, Chen Xu felt a cool breeze blowing in from his back, washing away the heat from his body.

Although comfortable, he was not deceived by these appearances.

He cautiously observed the mountains on both sides, and said, "This is probably an old river valley, and the entrance we have just entered is an air inlet, from which strong winds can be raging in the valley unimpeded. ”

"It's ridiculous to say that this kind of terrain can cause a very dangerous natural disaster - desert flash floods!"

As soon as Xu Ye finished speaking, the audience in the live broadcast room exploded:

"Isn't that right, Master Xu, there will also be flash floods in the desert?"

"yes, aren't you kidding? It's too late for the desert to run out of water, and there will be floods?"

"Xu Ye won't be stupid due to lack of water, so he wants to have a flash flood to replenish water!"

Chen Xu knew that the audience would not believe it easily, so he continued to explain:

"Don't doubt it, in fact, desert flash floods are a very common natural disaster, although the desert rainfall is small, but there will always be heavy rainfall, and because of the drought, the geology here is very hard, and there is no way to absorb water quickly. ”

"Therefore, a large amount of rainstorm rain will flow down the cliff, flow below, and then through the tuyere, all concentrated into this ancient river valley, and carry a large amount of sediment and stones, and without any warning in advance, very quickly!"

"According to statistics, a flash flood with a height of 0.15 meters can wash away an adult, and a water with a height of 0.6 meters can wash away an off-road vehicle! Although it sounds incredible, it is said that in the desert, no fewer people drown in flash floods than those who die of thirst. ”

Chen Xu quickly left the valley as he explained.

"In just 16 years, 16 people died in the United States in a desert flash flood, and I once met a friend who died in a flash flood, and their family was hit by a flash flood while their family was on a road trip, and both his wife and children were killed. ”

"By the time the search and rescue team found the vehicle, it had been swept 48 kilometers away by the flash floods, and his wife and children had already been drowned by the floods!"

When the audience heard it, they couldn't help but send a lot of sighing barrages:

"The Taunt Short Story series is coming soon. ”

"Xu Ye is simply a real little Conan, whoever you touch, who will have an accident!"

"Xu Ye: I have a lot of friends, but there are very few alive!"

"People who are like-minded with Xu Ye must also be people who love wild adventures, and it's not surprising that something happens!"

The friend in Chen Xu's mouth was actually a good buddy in his previous life, and it was he who received a distress call and called the police to participate in the rescue.

But in the end, only his friend was rescued, and his wife and children both died due to a lack of crisis survival skills.

Therefore, he is extremely cautious about this dangerous terrain.

Walked about 1 km again.

Fortunately, there was no direct sunlight in the river valley, and the wind was blowing all the time, which was very cool, and Chen Xu did not feel tired.

After leaving the valley, he came to the bottom of a cliff again.

The height of this cliff is much shorter than the previous one, about 10 meters high, so there is no danger of falling rocks.

Chen Xu raised his head and looked at the large rocks above, including the cliff face, which seemed to be patches of black stones.

This terrain ......

He thought for a moment, and a piece of information came to his mind, "It's noon, the hottest time of the day, and this stone area will live with a specialized lizard, called the Lianbo thorn-tailed iguana!"

"He has a body nearly 60 centimeters long, and a thick, fleshy spiny tail, if I can catch one, I can have a full meal, and by the way, I can also get a lot of water from the lizard meat!"