After initially walking in, Karl also noticed the structure of the cave.
In the first part of the journey, the slope of this underground cave is about 30°.
At the same time, there is a faint pungent odor in the air, somewhat similar to the smell of bad eggs.
As they continued to go deeper, the slope of the cave began to gradually become steeper, and the stench continued to permeate the cave without changing.
After advancing for a certain distance, not only the slope became steeper, but even the diameter of the cave itself began to become narrower.
It took almost a minute for the passage here to shrink from the previous four meters in diameter to the current two meters, which directly increased the difficulty of normal progress.
At the same time, the slope here has reached such a level that if one does not work hard to control the body's center of gravity, people will definitely slide down.
"Be careful."
Seeing that the environment had become like this, Karl immediately picked up Cyril and Green and began to use the ability to fly to continue moving forward.
Further down, the wood around the cave is no longer the city, but instead the rocks that should have been there are beginning to be exposed.
Of course, right now, the tunnel here has completely turned vertically downward. If you can't fly like Karl and the others, you can only use the protruding rocks around to descend.
Next, something interesting happened.
After flying downward for a certain distance and the hole became completely vertical, Karl immediately saw the end of the hole.
However, unlike the pitch-black cave, there was actually some light at the end of the tunnel. Karl could even use this light to see that there should be a relatively large space at the end of the tunnel.
"Everyone, please pay attention, the enemy should be right in front."
Seeing the change in the environment in front of him, Karl immediately turned around and gave Naiya a wink behind him.
The next second, this evil god rushed down first to help Karl and the others test whether there was any trap.
Watching Naia exit the exit safely without any traps suddenly appearing, Karl suddenly accelerated and rushed into the underground space.
When all of them entered the place, they immediately understood where the underground light came from.
In this new cave, almost every distance, a thick tube-shaped plant root will drill out from the rock at the top, and then the other end will drill deeper into the ground.
In these roots, there seems to be some red liquid flowing in their hollow tubes.
It is these red liquids that have the ability to glow in the dark. These bright lights illuminate the surrounding environment through the roots, and also bring brightness to the underground world.
According to Karl's observation, the gaps left between the roots here are not too small, and they are definitely enough for people to move freely here, just like the pillars used for decoration in a palace.
However, the huge number and their thick width also cause the distant scene to be completely blocked, making it difficult to see distant locations.
Now, apart from knowing that the area of this space is not small, Karl and the others have no way of judging the real area of this space, nor can they see what actually exists here.
Where the green light from before is hiding now is also a complete location event.
After looking around and confirming that there were no traces of enemies within sight, Karl said decisively:
"Naiya, you should still be able to release the clone, right?"
"Watch this exit, let's look for where that guy is hiding."
"Okay~~"
After hearing Karl's request, Naia immediately held up the hem of her skirt, took out a small one and threw it into the air.
With Karl's excellent eyesight, he could clearly see that there were tears in the corners of the eyes of this miniature Naia when he was thrown up, and his expression was also full of fear.
She obviously doesn't like her current situation very much.
After entering the cave where Karl and the others came from, the little guy struggled to hold a protruding stone with his hands. This small clone used such a difficult posture to guard the passage above his head.
Judging from the results, Karl felt that this child was quite pitiful.
The main reason is that I encountered an entity that was not very reliable.
However, they did not waste too much time on this matter. Once they confirmed that the small Naiya was firmly holding the top, several people began to search for traces of the enemy.
In order to ensure the safety of their own personnel, they adopted a search formation in which Naia took the lead and Karl went to the rear.
After all, Cyril and Green are the serious shortcomings of this team in terms of combat, so it is natural that they should be kept in the middle.
After taking a few steps forward, Naiya suddenly turned around and said mysteriously to Karl and the others:
"Carl, how do you feel about these roots?"
"Roots?"
Seeing Naia put on this look, Karl randomly found the nearest root and walked up to it, and looked at the thing carefully.
Except for the red liquid flowing like blood in it, this thing looks like a very common tree root, without any particularly conspicuous appearance.
But since this evil god can speak specifically, then there is definitely nothing special about this thing.
Immediately, Karl turned his attention to the red liquid in the roots.
With a calculation in his mind, Karl took out the [Decapitating Blade] without saying a word, and then tried to see if he could break a tree root to see what the luminous liquid inside was.
"Stop it!"
Seeing that Karl was about to raise the knife and drop it, Naiya rushed over with all his strength and hugged the arm that Karl was trying to swing down.
"You can't cut this thing, you can't cut it!"
"What's wrong?"
Looking at Naiya who suddenly became excited, Karl asked in confusion.
"This thing is magma, magma!"
Seeing Karl's eyes full of distrust, Naia immediately shouted loudly.
"If this thing sprays out here, we won't be able to continue searching here."
"It may not even be safe up there!"
"..."
After Naiya's hard persuasion, Karl finally took back the [Decapitating Blade].
Cautiously approaching, he tried to touch the roots in front of him with his fingertips.
The surface temperature of this thing is not hot at all, and the flow inside does not look like lava at all.
"Karl, what this guy said should be true."
Just when Karl was doubting the accuracy of Naiya's intelligence, Seliel also came over and spoke.
"This thing is not just wood, there are traces of very advanced magic in it."
"You can take a closer look."
Listening to Cyril's prompts, Karl immediately got closer to these roots.
At an extremely close distance, he indeed saw what was going on inside the roots.