"Is this a cave?"

Zheng Wenlou muttered, then took a few steps forward, standing on the steep rock on the edge of the cliff to take a look at this unknown underground space.

In front of him was an open vortex cave hall, overlooking down, a spacious underground river to the deep shadows, located at the bottom of the cliff more than ten meters away, flowing quietly, almost without end.

There is a very spacious space on both sides of the dark river, with strange rocks, steep cliffs, empty and deep, Zheng Wenlou is in it, and a feeling of a unique cave arises spontaneously.

At this time, everything in the cave seemed quiet, and he could only faintly hear the gurgling sound from the flow of the dark river, which made Zheng Wenlou feel overwhelmed.

Exit? Or take a look down there?

Zheng Wenlou relied on the light of a flashlight to observe the surrounding landscape.

He was not surprised that there was an underground river under the desert, but he was surprised that there was an incomparably wide cave at the bottom of the underground river.

Zheng Wenlou feels that the formation of such a special environment is nothing more than two points, the decline of the water level and the movement of the earth's crust.

He didn't know the exact reason, and he didn't want to delve into it, but he was now considering whether the underground river and the cave would affect his plans to build the city.

"The rocks here are very dry, and it doesn't seem like the water level will rise much in the short term, so you don't have to worry about the river suddenly pouring into the tunnel. ”

Zheng Wenlou squatted down and carefully observed the soil on the edge of the cliff.

There are traces of erosion by flowing water, probably hundreds of millions of years ago, the river water flooded here, and then the water level was lowered, and finally this huge cavern was formed, and from the information observed around, the water level is more likely to drop and the earth's core moves, because the steep rocks in the vicinity can only have such a magical shape under the long-term dissolution of groundwater.

"Check it out below. ”

Zheng Wenlou decided to go down and have a look, because he wanted to make sure that the water level would not suddenly skyrocket, causing a crisis for himself and Xiaotong.

The height of the cliff of more than ten meters did not make Zheng Wenlou feel tricky, he climbed down the stone wall, and came to the bank of the river in a few minutes, mainly because he was afraid of waking up the sleeping Xiaotong, otherwise he could jump directly down.

The air below the cliffs is very fresh, the water is crystal clear, and the slow flow makes the underground river look more like a rice terrace made up of small lakes.

Speaking of which, I have to focus on mentioning that the whole vortex grotto is divided into many levels, each layer has river water flowing quietly, not a simple river diameter flowing, but like a terraced field to form a huge river, at this moment Zheng Wenlou is standing in the first layer of the river, within his visual range, there are about six to seven layers down, each layer is like a small lake, magical.

If such a place is developed into a tourist attraction and is lit up with colorful lights, it will definitely attract countless adventure lovers to visit, but at this moment, in this dark world where you can hear the heartbeat, only Zheng Wenlou enjoys it alone, and the beasts have no idea of seeing the scenery.

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"If you put the beckoning cat here, it's going to make it crazy. ”

Zheng Wenlou reached out and scooped up a handful of river water and tasted it, the cold and thorough feeling couldn't help but make his face show a trace of joy, this water source is good, the real natural nectar, pollution-free natural pure water.

Although there is no equipment to check the various index content of the water source, it is also the most comfortable water source he has ever drunk.

This is not Zheng Wenlou's random conclusion, but the result he came to based on his own reaction, as a tree man, he can clearly detect the quality of the water source, different water sources give him different feelings, and the pollution will even make him difficult to swallow.

Zheng Wenlou held the river water and washed it on his face, if it weren't for Xiaotong in his stomach, he would have wanted to jump down and take a comfortable bath.

"It doesn't seem like a big deal. ”

Zheng Wenlou got up and walked around the nearby riverbank, carefully observing the intersection of the water surface and the surrounding rocks.

There is a clear dividing line on it, which is left by the erosion of the river, and the higher it goes, the drier the rocks become, which fully shows that the water level of this dark river has been maintained at a certain height for a long time, and will not rise and fall.

"It's a nice place. ”

After the crisis was cleared, Zheng Wenlou's mood suddenly became excited, this underground grotto was completely tailor-made for him! Not only spacious, but also with sufficient water source and good ventilation environment, is there any place more suitable for building a city than here?

Ant Cave is the difference between a golden nest and a dog kennel compared to here, rather than believing in the professionalism of the ant engineering team, he prefers this cave built by nature, at least it has not collapsed for thousands of years, and from the perspective of safety, it is higher than the ant nest, isn't it?

Although there are not many places he has detected so far, only the tip of the iceberg of this underground space, these places alone are enough to have all the conditions he needed in the early days of the city.

The cascading waterway resembles a pyramid, and at the top of the pyramid there is a very large clearing, which is the first place that Zheng Wenlou observed and caught his attention.

It's perfectly possible to build a lot of buildings there!

Just imagine, a city located underground, and around the city is an underground lake that goes down layer by layer, when he builds the city in the future, the surrounding environment is beautified with plants, flowers and green spaces, courtyard lakes, strange mountains and strange stones, and there are lovely Q boys shuttling through it, laughter, what a beautiful picture it will be!

A picture of the future was displayed in his mind, which couldn't help but make Zheng Wenlou's emotions excited.

Damn, that's it, that's it!

Zheng Wenlou immediately made a decision and decided to move the temporary station here.

With expectation comes motivation, Zheng Wenlou began to frequently observe this mysterious underground space.

The first layer of the aqueduct lake is deep and shallow, shallow just beyond the bare feet, can clearly see the fine sand and gravel on the riverbed, and even through the light, he found that there are all kinds of mineral stones at the bottom of the water reflecting the light, colorful like gems shining at the bottom of the water, very beautiful.

The deeper water level is about two meters, and Zheng Wenlou relied on his excellent vision and hearing to find that there are many traces of biological activity in the lake, all of which are unknown small animals, including transparent fish, snails slowly crawling on wet rocks, and very small crabs and shrimp creatures hiding in the cracks.

This discovery made Zheng Wenlou very happy, which shows that this isolated underground space has a perfect ecosystem and is not a dead place.

There are more algae plankton, which undoubtedly gives Zheng Wenlou more confidence in farming.

The vast underground space seems quiet, and the slightest sound can be transmitted far away, and the strange beasts and Q boys are running around, obviously this strange space also makes them feel very curious, and they can't help but grope around.

Zheng Wenlou carefully climbed over the slippery boulder and came to the top floor of the space, where a brand-new huge cave hall instantly appeared in front of him, the light shone through, and all kinds of stalactite stones like knives and axes were distributed around, showing colorful and beautiful colors.

With a golden stone curtain shining and a transparent white mica crystal clear, Zheng Wenlou felt that if this dark space had enough light, it would look extremely gorgeous.

"This is a stalagmite, and it will be good to carve it in the future and use it as an ornament. ”

Zheng Wenlou stretched out his hand and gently swept over a stalagmite, which was as crystal as warm jade, and when he hit it gently, it made a crisp and pleasant sound, which immediately aroused the curiosity of the Q boys, and then they also knocked around on the stalagmite, and finally magically outlined a beautiful melody.

"Be quiet, don't wake Xiaotong up. ”

Zheng Wenlou is very satisfied with the situation on the top floor, as long as the layout is cleaned up, a good foundation can be obtained.

Just as Zheng Wenlou was thinking about when to move in, a wolf howl suddenly interrupted his thoughts.

"Whew!"

The wolf's howl was very sudden, which startled him, and by the time he looked for the sound, more wolf howls were already resounding in this empty world.

It was like throwing a boulder into a calm lake, and the atmosphere of the surrounding wolves instantly became manic.

I saw the waves rolling on the calm lake in the distance, and a wolf that kept struggling was heading towards the bottom of the water, and when I looked closely, there was a huge shadow beside the wolf...

"What?!"

Zheng Wenlou's face changed, and he immediately reached out and picked up a boulder and threw it in the direction of the shadow!

The flying stones made a violent sound in the darkness with a violent cracking sound...

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I found out today that I could sign a contract, but it was still a message sent by the editor a few months ago, and the Taoist didn't notice it, and I thought I couldn't sign it, 233, I went to get the contract today, and the update was a little late.