Just like way back then, when Leo was trying to save Charlotte, the entrance to both the ravine and the underground dungeon were both concealed by a Concealment Magic spell. The only way to go about it was for him to make the Earth Elemental feel the surrounding earth, specifically the wall, and once he found the location he then made another path to get inside.

"Concealment Magic spell, and the only way to make the entrance look exactly the same way as the other wall is Terrain Illusion spell." Leo informed everyone, "What a great trick to hide the entrance of the secret cave, Black organization. Unfortunately, I happened to have the way to counter that."

"Create a new entrance." Leo soon after sent an order to the Earth Elemental. It was just like what he did in order to bypass the Terrain Illusion spell back at Southeast Fortress, he only needed to create a new path and connect it to the path of the blocked entrance.

Moments later, a new path leading to the cave was now created.

"Let's go!" Leo said before walking first inside. Cassandra, Elizabeth, Angel, Ethan, Chief Lago, Sebastian, and Dan quickly followed after.

After a few minutes of walking, they finally saw the end of the tunnel which was surprisingly devoid of any people from the Black organization...

There was no one around the cave at all, no people of the Black organization or even any traces of them still staying here. The only traces were them long already gone from this place.

"Everyone, don't ever let your guard down!" Leo immediately whispered a warning to everyone. This situation was just too peculiar. In his opinion, it was impossible for the Black organization not to be here in the cave after seeing the presence of a Terrain Illusion spell outside. It's just too impossible...

"Did they perhaps leave already?" Cassandra can't help asking.

"Maybe, or maybe not..." Elizabeth silently replied.

"We can't be sure." Angel refuted.

"Just keep your eyes sharp and watch your surroundings. If you notice any strange movements around, warn us immediately no matter in what form of warning." Ethan said.

"Sebastian and Dan, guard our back, we don't want anyone suddenly jumping from behind us," Chief Lago ordered.

"Okay!" Sebastian and Dan nodded before staying still and watching the way they came from while the rest continued slowly moving forward.

Leo quickly unsummoned 2 Earth Elementals soon after replacing them with 4 Wind Elementals. The Wind Elementals then disguised as the wind before shooting forward to scout ahead of them.

Whooosh!

Whooosh!

"Let's wait for the report of my Wind Elementals," Leo motioned his hand to make the others stop. And a few minutes later, the Wind Elementals sent a report that nothing was around. But just to be sure, in case there are another Concealment Magic spells lying around the place, hiding the people of the Black organization, he sent out all the 8 Earth Elementals currently in a toy soldier form to feel the earth of their surroundings. And just like the Wind Elementals, they found nothing.

"It's clear." Leo said before stepping out of the tunnel. Surprisingly, the moment he steps out, he noticed that his feet were now an inch in the water, which made him quickly think, "Was it because this place would be flooded soon due to the heavy rain that's why they left?"

"That is a reasonable excuse, right?" Cassandra replied.

"Indeed, if this place would most likely be flooded soon, then there is no need for them to stay anymore and get themselves drowned." Elizabeth replied in agreement to Cassandra.

"Or maybe it's because they are already finished setting up their trap," Angel proposed.

"I supposed that's the reason why they are no longer here, they have finished setting up the trap." Ethan agreed with Angel.

"You can all go check ahead to confirm if it's true, me, Sebastian, and Dan will stay here to guard your back." Chief Lago suggested.

"Okay, just send us any form of warning if someone attacks you." Leo nodded before quickly running deeper into the cave. Surrounding all of his sides were 8 Earth Elementals, and up in front were 4 Wind Elementals. Behind him were Cassandra, Elizabeth, Angel, and Ethan.

After 10 minutes or so of continuous running, Leo and the others finally arrived before the entrance of another cave.

This time, Leo didn't stop moving out of caution, but because of how flooded the ground was already. To be specific, the dept of the water has already reached his knees. But of course, this wouldn't be enough to stop them, especially since there was no presence of anyone being around the inside of the cave.

Leo decided to leave all Elementals outside of the cave first before he and the others continued walking inside, not minding the water. And moments later, they finally arrived inside the cave and were immediately greeted by floating tables and chairs where the people of the Black organization definitely did the double-check of the Chaos stones.

Further ahead of them was another entrance to a cave which should be the place where they have put all the Chaos stones. However, going deeper would require them to walk in waist-deep water.

"You guys stay outside to guard my back, I'll go in myself," Leo said to the others before walking further ahead.

Contrary to Leo's thoughts, specifically, the Lesser Chaos Magic Array being completed already, the moment he arrived inside he soon after found 100 of the Chaos stones just floating around on the water, while another 100 were embedded into the walls.

"Were they flooded before they finished completing the Lesser Chaos Magic Array?" Leo can't help guessing what happened in this place, and base on how everything looks like, it is most likely the case.

Without wasting any second, Leo immediately transferred his own Mana inside the Chaos stone, and let them infect one another.

Afterwards, Leo turned to look behind him and called out, "Ethan, quickly come down here, I need you to store all these Chaos stones inside your Storage Ring."

Because his own Storage Ring only has a few remaining spaces left, he could only leave Ethan to store all of these Chaos stones inside his Storage Ring.

"Coming!" Ethan replied.

After a minute and a half, Ethan finally arrived as he immediately expressed his astonishment, "Wow, never expected the Black organization would have a lot of these Chaos stones in here."

Counting every Chaos stones in here, including those that were embedded in the walls, there is most likely no more than 200 pieces.

"Store all of these Chaos stones inside your Storage Ring." Leo repeated.

"Oh, are you perhaps thinking of putting all the Chaos stones inside the Storage Ring and letting them explode inside, is that where this is going?" Ethan immediately assumed what Leo wanted him to do. Though he shook his head half a second later and continued, "However, I recommend you not to do this. Doing that might sound safe to you, but once this Storage Ring exploded from the inside, it will create a vortex of space, specifically a black hole, and pull everything inside. So, if you don't want to create much more bigger trouble than these Chaos stones exploding, then I recommend you that we go out and transfer all these Chaos stones far from Silver city after this, okay?"

Hearing Ethan's words, Leo simply shook his head as he thought that the former was just thinking silly before he replied, "All of these Chaos stones are entirely now in my control. So don't worry, the Black organization won't be able to cause any of them to explode anymore."

"Are you sure about that?" Ethan dubiously asked.

"I'm sure! That is also what I did back then at the cave of east sewer." Leo persuade.

"Okay, you're the boss..." Ethan expresses his helplessness as he soon after began putting all the Chaos stones inside his Storage Ring. Since Leo already claimed that it was safe, and was even confident about his words, then the only thing he could do was trust him.

Due to how flooded the place was, it took Ethan 5 minutes or so, on what normally takes a minute only, before finally storing all the Chaos stones inside his Storage Ring.

"Let's go!" Leo said before leaving the place along with Ethan.

A minute and a half later, they arrived before Cassandra and the others. They didn't bother talking because it was easy to guess that everything inside is already done. They just nodded their heads at each other before making their way out of this cave.

The moment they got out, Leo sent out an order for the Elementals to follow after him, and right after they continued walking to meet up with Chief Lago's group guarding at the exit of this cave.

Surprisingly, everything has been completed very smoothly. There were no obstacles and trouble along their way at all, aside from the trouble of moving around due to the flooded cave.

"Is everything done?" Chief Lago asked the moment Leo, and the others returned.

"Yes, we can now leave the same way we got in," Leo nodded his head in reply.

With that said and done, Leo and the others finally left the cave before making their way back on the surface to meet up with Veronica and the others who were currently busy working on rescuing the civilians.