Lin Feng came to the edge of the cliff and observed it down.

The cliff wall is like a cut by a knife, and it is a vertical section. Due to the long-term weathering, many potholes appear. The loose mud and sand have almost been weathered, and only some of the harder parts are still highlighted on the broken wall.

This just provided Lin Feng with conditions for climbing.

Because he did not expect this situation at the beginning, and the luggage he could carry was limited, he did not prepare anything like a mountain climbing rope in advance.

Lin Feng walked back and forth several times on the edge of the cliff, and finally conceived the route to climb in his mind. Then he folded the blanket into a ball and trapped it on his backpack and started climbing down.

With his previous experience in climbing in the Sky Eye Experiment Forest, and his own strength is very powerful, this kind of cliff that is not very steep can naturally not stop Lin Feng.

The height of more than 20 meters was easily handled by Lin Feng's hands and feet.

puff……

When Lin Feng stepped on the land at the bottom of the valley, the ground snarled slightly and sank into it.

"It seems that there was water here a long time ago..." Lin Feng made such a judgment.

But what is such a large ditch used for?

You say it is a river, but it is impossible. Because according to inference, this is a circular closed ditch. Unless there is an intervention from an alien river, it will be a stagnant pool and there will be no living water flowing.

Could it be a moat?

Lin Feng was shocked by his assumptions. If this was really a moat, it would be too damn big deal!

If there really existed urban civilization, how big would the city be? Is it worth building such a large moat? There were no excavators and Lanxiang technicians in ancient times, so how much effort would it take to dig out such a moat?

What's wrong with him, Lin Feng couldn't understand the thinking of ancient people.

Anyway, it has become the dust of history now and has nothing to do with Lin Feng. What he cares about is whether he can complete the task, and whether there are any treasures in the central area...

Lin Feng began to walk along the riverbed to the other side, and soon came to the cliff underground on the other end of the riverbed.

So he walked back and forth a few more laps and chose a relatively simple route, spitted on his hand and started crawling.

Lin Feng climbed very quickly, and he climbed to the top of the cliff in just one minute.

He looked back at the off-road vehicle parked at the other end of the gully more than 100 meters away, then took off the blanket and covered it on his head and went into the center.

When Lin Feng walked in the area within the circular heavenly punishment, he realized that he was wrong. Because the scope of this ancient civilization city was probably much larger than he thought.

Although there are no large buildings yet.

But Lin Feng had already encountered many scattered and broken wall trunks on this desert land.

Although it has been through thousands of years of destruction, it can still be seen that these places originally had houses, and there are quite a few.

Lin Feng believes that the structure of this ancient civilization city should be somewhat similar to that of ancient China, and seems to be divided into inner city and outer city.

Before the Qin and Han Dynasties, there was a habit of wrapping farmland in the city, but later, due to the scale of population and agriculture, the farmland was gradually transferred outside the city wall.

Therefore, there is a clear functional distinction, with the city wall as the boundary. Outside the city wall is an outer city, also known as the acropolis, which mainly serves to defend against foreign enemies and garrison camps. Inside the city wall is an inner city, an economic center and a place to hoard grain.

To put it bluntly, the inner city is the political and military center of a city, and the outer city is the commercial and residential areas established around this political and military center.

At this time, Lin Feng was in the outer city.

"Damn... In this way, the scope of this ancient city is too large..."

You should know that Chang'an City, the most famous and prosperous city in ancient China, is a famous city with more than 3,000 years of city construction and more than 1,000 years of capital construction. When the Tang Dynasty was at the peak of its prosperity, its population was only one or two million, and its area was only less than 100 square kilometers.

And what about here?

Calculated based on the radius of twenty kilometers, the city's area is as big as one thousand square kilometers, which is ten times the size of Chang'an City!

How could such a prosperous civilization have no record in history?

This is simply incredible!

"It seems that I have encountered something amazing..." Lin Feng murmured, but then he became excited.

You should know that this is a civilization that has not yet been known. When you come here, you are equivalent to the emergence of this civilization. Just like Armstrong was the first to step on the moon, it is of great significance.

Not to mention anything else, Lin Feng's name will definitely be famous in the exploration world in the future.

If you go out here again...

Hahahaha, Lin Feng was already dreaming about the scene of scattering a lot of gold coins everywhere in his mind.

Stay stable, stay steady.

Lin Feng took a deep breath of his expression and looked firmly at the direction where the center was.
Chapter completed!