When he was ready, Fang Chenyi hesitated a little, reached out and picked up a fist-sized stone next to him and threw it directly towards the passage inside the gate.

However, with the sound of a series of stones colliding with the rock wall, the sound of it falling to the ground was not heard for a long time.

Later, the sound disappeared directly.

"Holy, this is so deep in here?"

Swallowing his saliva, Fang Chenyi even began to shake a little in his heart.

However, when I think of the more dangerous the place, the greater the chance, not to mention that in addition to being relatively deep, after waiting for such a long time, there is no movement coming out, which also shows that there is no living creature in it.

Looking down at the bottomless darkness again [Biqu Island www.biqudao.xyz], Fang Chenyi gritted his teeth, reached out and turned on the headlamp on the tactical helmet he was wearing on his head, and fixed the M4 behind his back, and touched the tight dagger tied to his leg, as well as various equipment.

Finally, he gritted his teeth and turned around and stepped on the slope.

Holding the rope with both arms, his body maintaining a backward posture, just like that, Fang Chenyi began to walk towards the inside of the passage step by step.

Squeak~

However, just when Fang Chenyi had just descended more than ten meters into the passage, there was a sudden squeaking sound overhead, and when he looked at it again, the two stone doors that were originally wide open actually began to close.

And the speed is not ordinarily fast, and when Fang Chenyi wants to climb up again, it is obviously not enough time.

Bang dang!

With a loud bang, the two heavy stone doors closed in vain, and the original light disappeared in an instant.

Fortunately, although the stone gate was closed, the rope tied to Fang Chenyi's body and held in his hand did not fall downward.

When he raised his head and looked at the bright flashlight overhead, he saw that the two ropes were clamped on top of the stone door at this time.

Pulling the rope hard, Fang Chenyi found that it was still very strong.

Fang Chenyi's temperament was originally unwilling to admit defeat, but now in this situation, he was very calm and wanted to climb up, but thinking of the closed stone door at this time, he would definitely not be able to open it.

After a little hesitation, Fang Chenyi simply gritted his teeth and continued to walk down.

Instead of working in vain at the door, it is better to go down and see what kind of treasure is under here, and I can't say that I have obtained the treasure and have a way to open the stone door.

Since the rope tied to his waist had been caught by the door, Fang Chenyi simply untied it directly, leaving the rope in his hand in vain.

Fang Chenyi thought about it, hung the safety rope on his waist by himself, and after making a zipline buckle, his feet slammed hard, and then his hands cooperated with the relaxation rope one after the other, and the whole body began to descend quickly.

Three minutes, five minutes, ten minutes. After nearly ten minutes of rope down, Fang Chenyi still did not reach the bottom of the passage.

At this time, Fang Chenyi's hands and legs were already extremely sore.

Stopped his body and tied a knot of rope around his body to secure his body.

Of course, at this time, the rope in Fang Chenyi's hand was no longer the one at the beginning, but a bundle of rope in the space of his woven bag.

As for taking a rope before, it's already over.

Fortunately, after surviving on that desert island, he was always well prepared in the woven bag.

Now the rope in my hand is a special paratrooper rope, don't look at the thickness of chopsticks, but there is no problem in bearing the weight of five or six hundred kilograms.

Because of its small size, Fang Chenyi directly prepared nearly a kilometer.

And now this rope comes in handy.

Sitting on the sloping slope by the pull of the rope, his eyes looking around through the light of a flashlight.

Fang Chenyi found that the entire stone wall was as if it had been carved out of a whole stone, and there was not a trace of the joint.

It's just that after coming down for such a long time, Fang Chenyi was a little speechless and found that there was nothing along the way except for the smooth stone walls.

Shaking his head, he didn't know what the hell this place was.

After resting for a while, I felt that my arm was not so sore, and then I stood up and continued to walk down.

Gliding rapidly, from time to time I would look into the dark depths to see if I could see the world below

It's just a pity that no matter how many times he turns back, there is still endless darkness underneath.

In this way, nearly ten minutes passed, and the rope in his hand was almost at the end, and roughly estimated, Fang Chenyi felt that he had drawn a distance of nearly 1,300 meters at least downward.

What kind of height is this? There is nothing on the flat ground when the entry is replaced, and it is nearly three miles away, but when it is replaced by the underground, it is different.

1,300 meters, according to Fang Chenyi's understanding, the earth's crust seems to be only about 17 kilometers, and here is close to the sea, the crust of the ocean is much thinner than the rest of the place, and the thinnest place is even only six or seven thousand meters.

And now it has fallen a distance of nearly 1,300 meters, but it still hasn't gone down to the end.

The most important thing is that Fang Chenyi doesn't know how far away it is.

Sliding down again for almost two hundred meters, the rope was completely finished.

Looking at the still dark depths under his feet, Fang Chenyi swallowed his saliva, and three words popped out of his mouth with difficulty:

"Sloppy ......"

Raising his head and looking at the top of his head, which was also pitch black, Fang Chenyi can now be said to be in a dilemma, at a depth of 1,500 meters, it is easy to say that it is good to come down, but it is not so easy to climb up.

Fixing the rope to his waist again, Fang Chenyi took out the woven bag and began to rummage inside.

He was going to look to see if there was anything else he could use today.

"Parachute, useless. Inflatable boats, also useless. Damn, why is there a vibrator here?"

Flipping through the pages, Fang Chenyi actually found something in a corner of the woven bag space that is often seen in small movies.

At this moment, Chen Yi was a little speechless, but he also remembered that this was the special reward for himself.

I originally wanted to throw it away, but as soon as there were too many things, I forgot about it, and if I hadn't found something to see it today, I can't tell how long this thing would have stayed in the woven bag space.

Helplessly looking at the things in his hand, Fang Chenyi shook his head with some tears and laughter, and wanted to put it back into the woven bag, but stopped the movement in his hand.

At the same time, I also thought of a more reliable idea in my mind.