Doomsday: I Build an Infinite Train.

Chapter 429 Abandoned Base
Lin Xianyuan never expected that such a significant military base would exist beneath the Haiyan Prison, a secret underwater port for nuclear submarines.

“No wonder. If it’s such a large military base, it’s not surprising that the people of Holy City would hide here and use it as a base.” KIKI said with a look of sudden realization.

"Since the Holy City Organization made preparations to ambush us in advance, how come this place has also fallen?" Ning Jing frowned and asked, "Or has this stronghold been destroyed?"

“Very likely.” Lin Xian said in a deep voice, “However, I just checked the situation of the zombies in those prisons, and they don’t seem to be from the Holy City Organization. This means that they have not been entrenched here for a long time, but have only recently appeared here.”

KIKI nodded: "Something must have happened here, which is why this shelter has fallen and the underground passage has been invaded by the strange entity."

Huo Ge crossed his arms and said, "Then we've made a wasted trip."

Lin Xian's gaze narrowed slightly: "At least I can roughly guess how that group of people came and how they plan to leave."

“You mean, a submarine?” Kiki asked.

Lin Xian watched as the drone he had released monitored the sinkhole in the warehouse, making sure the black worm-like monster hadn't emerged, before saying, "However, we still haven't found the middle-aged man who used the forbidden item. Also, submarines travel in the deep sea, which should be more dangerous than the surface, so this doesn't seem to make sense..."

KIKI looked worried: "I wonder how Sister Chen is doing. Has the dark mark been removed? Otherwise, these strange entities attracted by the Holy City might devour our Infinite."

Lin Xian's expression darkened upon hearing this. His communication drone, which was operating across the sea, was unable to contact Chen Sixuan, which made him uneasy. His original plan was to strike the Holy City's stronghold directly to prevent them from attacking the Infinite again after nightfall. In this situation of being besieged by behemoths, a simple decoy could very well put them in a desperate situation. Therefore, Lin Xian decided to have Chen Sixuan lead the team to relocate and remove the marker, while he would lead his men to pursue them. The guy who escaped using the forbidden object was making Lin Xian uneasy.

Unexpectedly, before they could even enter the underground lair, they were blocked by a bizarre, invisible creature with an explosive concentration of dark energy lurking in the passage. Although the monster in the passage was large, it was far smaller than those special-grade or even A-grade creatures. However, judging from its threat level, Lin Xian felt that this thing might be close to the concentration of S-grade dark invasion, otherwise Ah Bai would not have been subjected to such a strong impact.

“That thing is blocking the passage, we definitely can’t get in, but…” Ning Jing said at this moment, “What if the people down there are already gone?”

“It’s good that they’re gone,” KIKI said. “We were just worried about being attacked again after nightfall. Once tonight is over, we’ll leave this hellhole. We’re not interested in this base or anything like that.”

Lin Xian stared into deep thought, a fragment of Gu Zheng's consciousness flashing before his eyes again, causing a sharp pain in his head. Just then, he heard a muffled, drum-like sound and suddenly opened his eyes, saying in a deep voice...
"I knew that was the sound! Turns out... it was coming from inside the submarine!"

"Team Leader Lin?" Ning Jing looked at Lin Xian.

"Besides the surface fleet, Holy City also has a submarine force." Lin Xian frowned, his expression sharp. "Strange, the Falcon Fleet doesn't dare to venture into dangerous waters, but they can, and they even dare to submerge in the deep sea..."

KIKI looked at Lin Xian and asked, "Do you suspect they have a way to avoid the strange entities?"

Lin Xian shook his head, looked at KIKI, and said with a solemn expression, "If the Holy City Organization really has communication with the Dark Civilization, then the Descent Faction is the Dark Civilization's opposition organization among humans. It makes sense that they possess such means."

“That makes sense. Since they’ve already been treated as traitors, the dark civilization might give them some kind of pass or something…” KIKI said.

"Pass?"

"I'm just making this up, but that's roughly the idea. If the Dark Civilization considers them allies, is it really possible that they'll be protected from attacks by the monsters?" KIKI asked.

Ning Jing frowned: "But this group was clearly attacked in the afternoon as well."

“There’s no point in discussing this,” Lin Xian interrupted the two, saying directly, “We’re already here, so we should investigate this submarine base. Taking the initiative is better than passively waiting for these Adventists’ henchmen to attack us. Besides, we might be able to find something useful at this kind of military base.”

"Like nuclear submarines?" Xiaoqing quietly replied from the side.

Lin Xian said, "Or, some kind of forbidden thing, a disaster plant."

"But... how do we get in?" Ning Jing asked.

“There are many ways to get in.” KIKI was working quickly on her mobile device and soon figured out the general layout of the base.

"This submarine port doesn't have an outer harbor, which means it's a highly secretive inner harbor. In other words, this port is built inside the mountains of this outlying island. You see, the terrain of this island's mountains is very unique, with a large underground cavity and a deep-water cliff. It's simply an excellent and secluded inner harbor base. No wonder it was built here. If submarines resupply and undergo maintenance here, satellites simply won't be able to detect them..."

KIKI pointed to a valley on the offline map and said, "There is a secret passage here, like a mine tunnel, but it is sealed off. It is actually the real entrance. The Haihong Channel below the prison is the backup entrance. The entrance is located below Prison Building No. 1. The hole under this warehouse must have been accidentally blown open. Besides these two roads, the only other way to get in is through the submarine's deep-water floating harbor channel."

"Forget about deep-water floating harbors. Let's try to find a way through these two shore passages," Lin Xian said.

“There’s that monster in this passage. Is our only option to try entering through the mountain entrance over there?” Ning Jing said.

Lin Xian and KIKI analyzed the blueprint and found that the entrance to the passage was of a very high level. However, this secret submarine port must have been around for a long time. Since the establishment of the federal government, the secret armed forces of various regional powers have begun to be centrally deployed under the leadership of the Dragon Kingdom. The interstellar army was born under this background.

“That tsunami spillway and submarine base are part of a whole, prepared for high tide diversion and extreme situations. If the channel has been infiltrated by the strange entity, it means the base itself is not safe either.” Lin Xian frowned. He never advocated operating at night because once marked, even a level one mark, is extremely dangerous. But they were now surrounded on the island, and the Giant Ocean God was likely lurking in the nearby sea or airspace. Under these circumstances, knowing that they were being targeted by the Adventists, how could he sit idly by and wait to die?

Moreover, Ryan from the Falcon Sea Group mentioned a forbidden object that could potentially affect the Garland underwater volcano. Now it seems very likely that it is related to the middle-aged man who ran away. Lin Xian felt that this kind of hidden danger had to be investigated.

"Don't rush. It's not convenient to move around in the dark. This island may not be big, but it's definitely not a safe place. The problem is that Viola isn't here. But I'll send a robot over first and scan the waypoints for spirit points. That'll be safer."

KIKI nodded: "That's right."

Lin Xian raised his hand and the Black Star Forge flashed. At this moment, Lin Xian took out an ACT mech that was the same as Qian Su Xun's. This mech was used by Lin Xian to experiment with the neural interaction system and prepare it for adaptation to the super-large mech. For this purpose, some remote-control improvements were made, which can do many things that flying drones cannot do. At this time, there was no other way, so Lin Xian took this thing out to replace Viola for remote exploration.

Lin Xian handed over the operation to KIKI. The little girl immediately took over from everyone and began to design waypoints. Soon, on the prison tower in the dark of night, a sharp humanoid mech accompanied by several reconnaissance drones fell from the high building and rushed into the forest at an extremely fast speed. The sudden commotion immediately attracted the attention of many zombies that had escaped from the prison in the forest. For a moment, howls rose up and scurried in the dark.

At the same time, Lin Xian began to rebuild the information link towards the main island using drones. Although the sea was turbulent and the drones were likely to be destroyed by the waves or the strange entities while guiding them at low altitudes, he couldn't worry about that now. Drones could be rebuilt, and the strange entities couldn't lock his location through drones. His top priority now was to try to contact the Infinite to ensure that the base camp was safe.

The prison tower was shrouded in darkness and silence. The team communicated through the light screens of their power armors, with only the energy lines on the outside of the armor emitting a faint glow. The surroundings were deathly quiet, but the team members were very experienced in the darkness. They knew that the shadowy areas in those open spaces were extremely dangerous, and even C- or D-level anomalies were quite troublesome in the dark.

In KIKI's control screen, she has fully integrated into the ACT mech and is stealthily moving at high speed, following a winding mountain road to the foot of the northwest mountain of the island. In the screen, what appears to be an abandoned military outpost appears in the night vision goggles. Immediately, the ACT mech passes straight through a fence and arrives at a huge mountain gate that looks like an air-raid shelter.

It was a huge blast-proof door. KIKI walked forward and opened the door lock terminal cover on the small side door, revealing a worn-out access panel. "Looks like it hasn't been used in a long time..."

As KIKI muttered to herself, she manipulated the ACT robot to connect to the terminal and began the power-on unlocking process. The sound of the emergency circuit shutting off came from behind the rusty door. "The door is open," KIKI's voice rang out in the communication channel, tinged with a tense excitement.

The ACT robot stood in front of a huge blast-proof door. The emergency circuit on the side of the door had just been activated, emitting a low hum. The rusty metal hinges slowly turned, and the side door opened with a screeching sound, revealing a deep passage.

The side door slowly opened, revealing a huge space.

"There's a lot of junk piled up inside; it hasn't been touched for at least decades. The outer door shows signs of forced entry, probably done by some survivors, but they couldn't open this blast door..."

Lin Xian stood in the shadows of the prison tower, watching the real-time footage transmitted by the ACT robot controlled by KIKI through the light screen of his power armor. The robot's night vision system transformed everything in the darkness into cold, gray-green images, as if the whole world was covered by a layer of deathly silence.

“Air composition analysis – low oxygen, high humidity, trace amounts of hydrogen sulfide.” KIKI quickly reported the data: “This place has been sealed off for too long, there may be water or corrosive gases inside.”

Looking at the synchronized video feed, Lin Xian said in a deep voice, "Strange, could I have guessed wrong? There are no signs of anyone passing through the main passage. Could those guys really have used the flood discharge channel?"

The ACT robot stepped in, its metal feet making a soft rustling sound as they trod on the dusty floor. The emergency lights on either side of the passage were long gone, leaving only the robot's built-in spotlight to illuminate the way ahead. As the beam swept across, dust particles floated slowly in the air, like some invisible ghost wandering in the darkness.

“The garage area,” KIKI said softly.

In the robot's view, rows of military trucks and armored vehicles were neatly parked, but their tires were flat and their bodies were covered with thick dust. The doors of several vehicles were half open, as if someone had left in a hurry and never returned.

“These cars have been parked for at least several decades.” KIKI’s voice was a little strained. “The paint is even oxidized and peeling off.”

Lin Xian did not respond, but stared at the screen. The robot's camera slowly swept across a military jeep. A faded military uniform was hanging on the driver's seat, and a blurry number could be vaguely seen on the cuff.

"Supplies depot." The robot continued forward, passing through a heavy blast-proof door.

The place was filled with wooden crates and metal shelves, but most of the supplies had rotted and spoiled. Food packaging bags were shrunken and moldy, and cans were so rusted that the original labels were no longer visible. In a corner, several barrels of fuel had leaked, and black oil had congealed into sticky patches on the ground.

“There’s also a hangar here.” KIKI switched the robot’s perspective.

The hangar was more spacious than the garage, but equally desolate. Several hypersonic fighter jets sat silently in their positions, their wing paint long since peeled off, revealing rusty metal frames. Beyond the hangar was a half-floor equipment warehouse, filled with a large number of weapons: rifles, pistols, and ammunition boxes. However, apart from the weapons stored in special containment devices, which seemed to still be usable, most of them had lost their original deterrent power. The metal parts of the firearms were severely corroded, and the bullets in the magazines were even oxidized and deformed.

"It looks like... just an ordinary military base that has been abandoned for many years. Even if there is something in this kind of place, it would be too rotten to be used."

"Didn't those survivors who were hiding in the prison come here to search? If there's no army guarding it, they should have had a way to get in." Ning Jing asked from the side.

KIKI was maneuvering the ACT robot and several drones to quickly scan the environment when Lin Xian suddenly spoke.

"Pause."

"what happened?"

"At the 2 o'clock position, raise the viewing angle."

He asked KIKI to adjust the view, and the screen then looked upwards. A sign appeared prominently on the wall of a huge passageway. Although it had faded, Lin Xian and the others recognized it at a glance.

Nuclear radiation marker!
Deep within the base, a massive lead door came into view in the night.

At the same time, the Geiger readings on the ACT robot also began to rise continuously, exceeding the level that would be absolutely dangerous for the human body!
"Now we know why..."

The night was as dark as ink, enveloping the entire island.

Lin Xian, along with KIKI Shiori and Ning Jing's team, had arrived at this long-abandoned military base. Looking at the numbers on the Geiger detector, Lin Xian said in a deep voice, "Coming here without full-body power armor is suicide. However, this radiation concentration doesn't seem like a large-scale nuclear leak."

"Strange, could there still be nuclear fuel stored here?" KIKI asked as the group followed the path explored by the robot to the closed gate inside the military base.

Lin Xian looked at the mechanical door in front of him, raised his hand and waved it. The mechanical heart quickly took control of the dusty door, and with a loud hum, the door slowly opened.

Behind him, the crowd retreated from their formation, their expressions wary. The moment the door opened, a surge of air suddenly rushed out, raising clouds of dust. As the door opened, a scene completely different from the outside appeared before them.

Behind the door was an area enclosed by a steel door and barbed wire. There were also tracks on the ground. Lin Xian casually swallowed them and found that it was a short passage. The ground here was spotless, and the passage was lit up, which clearly indicated that someone was active here.

"Be careful, this might be their hideout."

Lin Xian raised his hand to signal the team to get ready, and then had the drone lead the way. The group cautiously ventured inside, but as soon as they emerged from the passage, the scene before them stunned everyone.

Stepping out of the passage, a massive four-armed mechanical device stood in a deep pit with a diameter of over three hundred meters, with four ventilation ducts running straight down, making it look quite majestic!

"What...is this?" KIKI asked in surprise.

Lin Xian shook his head and then walked down the stairs. When they arrived at the lower level, an even more astonishing scene appeared before their eyes. The huge mechanical pillar went straight down hundreds of meters into the ground, all the way to some kind of red lava pool at the bottom. The lava pool was divided into several regular areas, and a huge transformation device covered it like a dome. As soon as they entered, Lin Xian and the others found that the temperature of the power armor was constantly rising, and heat waves were rising up!

“It looks like some kind of geothermal device, but… how can it have such high radiation?” KIKI said.

Lin Xian shook his head. The scene before him was beyond his expectations. There was no nuclear fuel leak here, but the huge device in front of him was definitely not just a 'base'.

"This thing doesn't look like a military facility..."

(End of this chapter)