About twenty minutes' drive, the Mars rover reached the edge of "Gate of Hell".

A contour was found along the contour line that allowed the Mars rover to pass. Fan Tong hit the steering wheel and drove the car over.

As the Mars rover continued along the rugged narrow path deep into the mountains, the signal was affected by nearby hematite and began to be intermittent.

Glancing around the steep cliffs and rock walls, feeling the breathless atmosphere, the astrophysicist Aubrey shrank his neck and couldn't help but say a word.

"Speaking of it, why is it called Hell's Gate here? Don't you panic when you give this name here?"

Fan Fan said casually.

"I'm afraid you have to ask nasa. The name was taken by them."

As the earliest mechanism to send the probe to Mars, the slightly larger terrain undulations were basically given a name by Curiosity.

Perhaps the scientific researchers responsible for naming thought that the word was more artistic bacteria, so they gave the mountain a name. It is difficult to say whether there is an art bacterium or not, but the image is nothing to say.

"Several meters of cracks will appear randomly around the gates of Hell. These cracks are like earthquake cracks and can be directly entered into the ruins. Of course, these cracks are not the only way to enter the ruins. When it comes out, it passes through a fixed entrance. Its location is probably in the middle of the Hell's Gate Mountains, embedded in the rock wall on the side of the rift ... just in front, we have arrived. "

Moving forward along the rift, the shut-down Mars rover slowly parked beside a ridge. After the group got out of the car, they followed Fan Tong's steps and came to an upright stone pillar about four or five people tall.

Behind this stone pillar, you can see a steep downward stone slope.

The light of the morning light shone on the back of the stone pillar, and a sacred light grew down along the trail of shadows. Just like some kind of natural miracle, just looking at it can make people feel respect.

If you just look at the shape, it does feel like a bit of a ruin.

"... a little strange."

With a flick in his mouth, archeologist Professor Fernal from Oxford University frowned and walked down to the stone pillar. After groping along the surface of the stone pillar for a while, he suddenly spoke and continued.

"This is the marine sedimentary environment?"

Standing behind Professor Fernal, there was a slight accident in Fan Tong's face, and he nodded and said.

"I think the same as you ... Billions of years ago, it should have been an ocean."

"And it's mostly deep," Palmer groped along the contour of the stone pillar, feeling the hard touch from the graphene fibers, Professor Furnner muttered to himself, "the hydrogeological environment here It's unique. There should have been many major geological disasters in history. Volcano eruption, plate collisions, and special tectonic movements that are not on the earth ... It's incredible. "

"Compared to the geological formations here, let's focus on the ruins below the ground," Astrophysicist Aubrey walked to the front of the group, and turned back to Lu Zhou, eagerly looking, "You think What? Boss. "

"... I have no opinion, but if we just stand outside, we're afraid we can't figure out anything," said Lu Zhou without thinking about anything. Lu Zhou thought for a moment, then continued, "Go ahead, I Take the lead. "

Wang Peng raised his hand, put the parachute rifle rack with the flashlight in front of him, and walked to the entrance of the cave.

"Let me do it."

Aubrey and Fernal met each other, exchanging an odd look. Fan Tong shrugged his shoulders helplessly, and tossed the sample of stones in his hands.

"Although I said that the weapon may be useless ... but if you insist, it's up to you."

Although it is true to say so, I have to admit that having a gun in front of the road still brought a lot of security to the party.

Even if everyone knows that if they actually meet any living aliens, most of the weapons on Earth will be difficult to guarantee that they will retreat. But at least in the sense of the heart, the muzzle of the black hole can still give them some comfort.

Schultz whispered as he walked beside the land boat.

"Are you sure those Martians are ... dead?"

Looking at the surrounding environment alertly, Lu Zhou shrugged his shoulders and replied casually, "I'm not sure ... but if they weren't dead, we would have seen them on the earth long ago."

Can survive billions of years in this universe ...

Even if the Milky Way is not occupied, the star fields around the solar system that are thousands of light-years long ago should be under their control.

At this time, Dr. Lomonov, an aerospace engineer who had not spoken, suddenly burst out a word from his mouth.

"Have you seen it before, but we didn't realize it?"

Hearing this, Aubrey didn't hold back a shiver, and coughed.

"Stop this ghost story!"

A group of people continued to go deep into the tunnel.

So far, this expedition has been going smoothly without encountering any setbacks.

Relying on the marks left by Fan Tong when they came out, they smoothly pushed the cave to a distance of at least two kilometers. According to the data displayed by the depth detector, they are now about 200 meters deep from the surface.

As they move deeper and deeper, the feeling of alienation from civilization grows stronger. It felt like the baby who had just cut the umbilical cord was thrown into a bottomless well.

There was less and less communication between them, and everyone was silent and silent, no matter whether it was words or nervousness.

Just then, Fan Tong suddenly stopped and looked at the fork in the road ahead.

"Nothing ..."

Everyone stopped.

Looking at Fan Tong who stopped, Lu Zhou cast a glance at him for inquiry.

"what happened?"

"The sign breaks here."

Walking to the wall, Fan Tong reached out and groped for a while, and found a scratch cut from it.

This is the mark left by the multi-purpose **** when it came out of the underground ruins. This clue should originally point directly to the deepest part of the ruins, but now it is cut off from it.

Looking at the two forks in front of him, the expression on Fan Tong's face became more solemn, and he muttered to himself.

"Sure enough ... the passage inside the ruins has changed. I didn't see any forks here. I had to go back about one kilometer to meet the first fork."

"Yet the fork appeared early."

"I'm afraid it's not just as easy as going out early."

With a murmur in his mouth, Professor Fernal stepped forward, crouched next to the fork in the road, and chipped some debris from the rock wall with the multifunctional **** in his hand and pinched it for a moment to look at it.

"... incredible."

Schultz swallowed and looked at him.

"What is incredible?"

"Three billion years ago ... or even earlier, this should be a cave full of alloys," stood up, and Professor Furnell carefully packed the cuttings into a sample bag and stuck it on. After marking the tag, "Although the traces of civilization have been weathered by time, the rocks will not lie."

Professor Aubrey frowned.

"what are you saying?"

"I mean, judging from the weathering traces, the structure of the road on the left is obviously more complicated than the road on the right." Taking a look at Fan Tong, who was lost in thought, Professor Furnell continued to look at Lu Zhou. Shrugging his shoulders, "You are the captain. Which way you go, you choose."

-

(Recommended a good fantasy book "Lin Yuanxing", the new work of the big house pig, recommended wall crack ~)