Chapter 750

Looking ahead, a huge sinkhole appeared in the eyes of Romanov.

Tiankeng is huge, no less than 200 meters in diameter, irregular round.

With the approach, when you come to the edge of Tiankeng, you can only see the darkness when you look deep.

A stream of light green gas is pouring out of the darkness, sweeping to both sides of the pit.

Because of the existence of gas, there seems to be one more color in the air, a light green color.

At this time, on the edge of Tiankeng, many mobilized soldiers are walking around, installing a kind of sliding rope equipment.

A number of colored ropes have been thrown into the sky. Next to the equipment, the mobilized soldiers are "laying the ropes" to find out the depth of the sinkhole.

"How's it going? Is the depth clear? "

Come to slip rope equipment next to, Luo rumanfu to operate the mobilization door of equipment to ask.

A mobilizer shook his head and said, "the rope has been lowered nearly 5000 meters, and the sensor at the end still doesn't give an alarm. The depth of this sinkhole is amazing."

"Wait! Here we are. The rope is in the end. "

On the bloated equipment, the yellow light suddenly came on.

This makes the mobilization soldiers who operate the equipment surprised, even busy.

The yellow warning light is flashing, which means that the sensor at the end of the rope touches the ground and sends information to the ground in time.

"How many meters?"

Looking at the deep Tiankeng, Romanov inquired to the mobilized soldiers who operated the equipment.

"5321 meters, more than 5300 meters deep."

The mobiliser who operated the equipment replied.

More than 5000 meters deep?

In the helmet, Romanov looks dignified.

It's not so easy to explore with such depth. We must be fully prepared.

"Vanya

Cried Romanov suddenly.

At this time, a mobilized soldier answered and moved forward, holding a military salute and said, "yes

Looking back, Romanov looked at Vanya beside him and said, "first send two teams down to explore the way. Remember, everyone must bring an extra bottle of oxygen tank. The oxygen under the ground is very thin. The oxygen in the power combat suit can't last long."

"Yes

Vanya responded.

Roloman nodded and said, "go! Carry out the task. "

Turning around, Vanya used the messenger to give orders to his subordinates.

"The first and second teams, immediately prepare to go down to Tiankeng for exploration, pay attention to take the oxygen tank, ten minutes later, gather at the sliding rope of Tiankeng."

"Yes

"Yes

Two responses came from the messenger.

With the order of Romanov, the personnel who went to explore the pit were selected.

Ten minutes later, two teams, 22 soldiers, each carrying a bottle of oxygen tank, gathered at the sliding rope equipment beside the Tiankeng.

Wearing a power combat suit and carrying a half meter long oxygen tank makes the mobilized soldiers look even heavier.

Looking at the two lines of the team, Vanya said in a deep voice: "this mission is extremely dangerous. It's out of reach. Withdraw immediately. Team leaders, your mission is to ensure that every soldier can return safely. Now, let's go!"

As soon as the words were finished, Vanya made way for the mobilization of troops.

At the command, the exploration team of the leading army set out.

Using the six rope devices beside the Tiankeng, 22 soldiers slid down the rope to the depth of the Tiankeng.

Standing at the edge of the sinkhole, rolomanov silently watched the mobilizers go deeper and deeper, and watched them leave.

The exploration team descended rapidly. In the blink of an eye, more than 20 soldiers disappeared into the darkness.

The Tiankeng is almost vertical, and the upper layer is also mixed with soil. With the mobilization of explorers, the cliff is pure rock.

The rock is dark brown, with countless water droplets on its surface. The liquid is light green, which seems to have something to do with the light green smoke.

Along the rope all the way down, away from the ground is also more and more far, all around a dark, silent, looking to the top of the head, only to see that point of light.

"Turn on the night vision function, slow down steadily, and be alert."

In the dark, with the blue light flashing, the mobilized soldiers sliding down the rope turned on the night vision function in the helmet.

In the slight sound of mechanical operation, the darkness suddenly disappeared.

The huge space was immediately reflected in the eyes of the mobilized soldiers.

They are still in the sinkhole. In a vertical cylindrical passage, you can only see the cliff at a glance.

It's amazing.

The vast space makes the mobilized soldiers sliding down close to the rock wall like insignificant ants, like a few black spots.

At this time, on the ground, relying on the induction device in the rope, the ground personnel are constantly monitoring the exploration team.

"Where are they now?"

On one side of the sinkhole, in front of a monitoring device, looking at the huge screen, rolomanov asked.

The chief sergeant's question in his ear made the monitor in front of the screen say, "it's down to 1500 meters now. In about half an hour, they will be able to reach the bottom of the Tiankeng."

"Can they still be reached?"

Romanov continued.

"No, there is a lot of underground signal interference. They lost contact with them a few minutes ago. When they reach the bottom, that is, the other end of the rope, they will resume communication with the ground by relying on the wired communication interface at the other end of the rope."

The rope used in this mobilization is not only rope, but also a wired communication line.

For this exploration, the first regiment has made full preparations.

In the sinkhole.

In the "hissing" sound of friction with the sliding rope, the exploration team is descending along the cliff.

The observation distance of night vision instrument is limited. Looking down, the deep darkness is like a monster with a big mouth. The weightlessness at the foot, the vast space, the lack of strong perseverance, and the pressure of the environment are enough to make people crazy.

And the exploration team, since entering the Tiankeng, has been silent, no one left.

In the "hissing" friction sound, the team always keeps the same speed of decline, and the distance between the personnel always keeps the observable distance.