"It's funny."

With such emotion, Ian now has a lot of strength, he can defeat a powerful enemy that was unimaginable to face, and an ancient, mysterious relic of the pre-era is in front of him.

And this ruin was even commissioned by his teacher to explore, to try to stop its mutant goal.

- Yes.

- That's it...... The life I want.

- That's the day I long to go through.

With this in mind, the sound of lonely, but not lonely, footsteps sounded in the water-shaped caverns deep underground, and the increasingly shining psionic light in the young man's eyes illuminated the winding and complex, yet smooth and smooth rock face.

In this way, he was excited, with anticipation, joy and even gratitude, and kept striding forward.

Until the end.

The little cave is about to reach its end.

A brighter glow than the inside of the cave appeared at the end of the cavern, making the exit look like a door made of light.

Taking a deep breath, Ian stared at the end of the long road in front of him as he strode forward.

Then he walked through the door of light.

So, a whole new world appeared before his eyes.

——A huge semi-circular karst cave that is nearly a thousand meters high and I don't know how wide it is, just like this, appeared in this extremely deep underground.

The dense karst cave entrances are distributed on the walls of this semi-circular giant karst cave, like a waterfall flowing out of the endless sea water, emitting a noisy tidal sound.

Ian walked out of the hole, the fluorescence in his eyes was not refracted by the reflection on the smooth calcified rock wall, and the warm and watery psionic light seemed to break through some constraints, and began to spread in all directions.

Eventually, the light blends with the cave and allows the boy to see the new world behind the door.

In front of him, there was a vast underground cavity that almost made him feel like he was back on the surface, and rows of rock pillars stood in the deep darkness.

The glow in the boy's eyes could only illuminate a small part of his surroundings, and what really brightened the entire cavity was a glowing cloud at the top of the cavity dome.

It was a mass of water vapor that was constantly discharging violently, and the sea water flowing from the cave slapped on the ground, stirring up a large area of water mist, and these water mist converged upward, stirring the psionic field, forming such a cloud of light that continuously produced small lightning bolts.

The floor of the cavity is so flat that even the pillars seem to be man-made, and their surface is covered with a layer of calcification that looks like stalactites, making them crystal clear and primitive.

But this is only an illusion.

As if sensing something, the boy raised his head.

Then, hold your breath.

Because, he saw what this huge underground cavity structure was made of.

That's metal.

The pitch-black metal grid dome, with its towering rock pillars, supported the massive underground cavity without collapsing.

This is not a naturally formed underground cavity cave...... This is a magnificent man-made dome, a magnificent temple that celebrates the wonders of civilization!

"Oh my God......"

Sighing and lowering his gaze, Ian looked in the center of the cavity in the direction of the pillar of rock as it spread forward.

There was a square, black stone monument full of cracks and omissions.

It is written in a simplified inscription with a few large characters.

【Sequoia Base】

In the vast cavern of the underground cavern, a tall stone monument is erected, which is a standard golden ratio rectangle, pitch black and full of cracks, which gives people a sense of solemnity while being quaint.

[——I would like to use this monument to commemorate all the watchers for 3,400 years.] 】

[——From today, we will not need to look]

【——3472.5.27】

This is the text on the stele, inscribed in the same lingua franca as it is today, and anyone who is literate must be able to understand the meaning of the words on the stele, and the glowing clouds that linger around it fill this ancient and majestic stele with an illusory and hazy sense of confusion, and looking at it is as if looking at another era thousands of years ago from an extremely distant distance.

Ian stared for a long time before slowly lowering his gaze and looking behind the stele...... The murmuring water follows the path behind the stele to a massive stone arch bridge, and at the other end is a decaying metal gate that has long been opened, and the mottled rust on the door speaks of the flow of time.

There are traces of time, and the seasons are like flowing. Thousands of years of flying light have passed away.

"Even if it is the creation of the civilization of the previous era, it will not be able to remain intact in the past 1,600 years."

Ian couldn't help but sigh a little: "Moreover, three thousand four hundred years? The history of pre-era civilization can be recorded for 3,400 years, which is also quite a long time. ”

He knew that he most likely relied on his psionic instinct and chose a cave that led to the gate of the ruins of the previous era's civilization - of course, it could also be the back garden, which really looked a bit like a man-made scenic spot in the backyard.

In short, judging from the complex underground structure of this area, those strange karst cave tunnels may lead to every corner of the ruins.

But that doesn't mean much, and for the Prophet, it was not a waste of time to set out from anywhere.

Instead, Ian felt that this would give him a better understanding of the entire subterranean redwood ruins.

Retracting his gaze into the distance, Ian scrutinized the entire dome.

The glowing cloud of discharge above the head does not need to be said for the time being, it looks mysterious, but in fact it is just a physical manifestation of natural psionic energy, and it is not unusual.

What really deserves to be surprised is the strange blue river below the arch bridge.

The sea water flows into the river, raising wisps of translucent smoke that envelops the entire stone bridge, ethereal and mysterious, but also with a touch of weirdness.

The river is flanked by marble guardrails, many of which have collapsed.

Ian could tell that it was probably an ornamental man-made river, something that would exist on Earth or in any civilization...... Intelligent beings cannot remain absolutely sane forever, and they sometimes make such things for the sake of beauty.

But what is really strange is that there are many traces of fighting around these collapsed guardrails.

Squinting his eyes, the boy approached, and he observed the marks of a fight on the ground, and saw that most of them were scratches and gnawing marks from some animal fight—some very old, some very new, and even more recent.

"It's not surprising, after all, it's almost all seawater, and if this moat is fresh water, it's not surprising that there are wildlife fighting for safe drinking water."

Ian can't be said to be well-informed, but he has at least seen the animal world, and the struggle between wild animals for drinking water is like the fight for water in modern rural areas, where life-and-death fights and weapon fights can occur at any time.

It wasn't a big deal, and Ian was going to keep going, but he suddenly heard a noise in the cavern behind him.

Bang ...... Not the footsteps of men, but the sound of some kind of beast's steps.

Ian pondered for a moment, then disappeared and waited quietly in the shadow of a stone pillar.

After a short time, several green armored lizards came out of the cave with cautious expressions and very careful walking.

Lewen