The focus of this expedition was the inspection of the Labyrinth Construction skill, but not all of its details could be seen immediately. As Vandalieu examined this skill, more new effects revealed themselves.

First, whenever Vandalieu descended to a new floor, he could see its overall layout. The moment he took his first step, a map would appear over his head.

He could also change the structure of floors that had already been cleared. He could build walls, set traps and even create staircases connecting floors, though only when both floors had already been cleared.

“Oh, there’s a wall of trees appearing right in front of us!”

“To think that you could make pitfalls and even stairs…”

“It uses up quite a lot of Mana though,” said Vandalieu. “Small traps and walls cost ten thousand, and ten million for stairs that lead both up and down.”

“But it’s not a lot for you, is it, Van?” asked Basdia.

“That’s true.”

“That’s amazing, Vandalieu,” said Darcia. “If you used it to create walls on all sides, we could rest safely, couldn’t we?”

Depending on their layout, the walls of any Dungeon could be made of trees, cliffs, stones, bricks, unidentified metals or even like the internal organs of an enormous creature, but the thing that they all in common was that their structure couldn’t be altered artificially.

The cliffs of Garan’s Valley and the minerals of Doran’s Aquatic Caverns could be temporarily broken and chipped, but they would return to normal after a few days at most. Even disarmed traps would be replaced, although it was a mystery as to who had set them.

If this weren’t the case, high-class Dungeons would collapse during battles between high-Rank monsters and the mighty adventurers challenging them, so perhaps it was only natural that they had self-repairing functions.

Building additional walls or setting traps was impossible. It was certainly difficult to bring the materials to do so into a Dungeon, but even if one did take the effort to do these things, they would be destroyed by monsters or simply disappear eventually.

Even in Dungeons that were like labyrinths with stone walls, monsters wouldn’t destroy the walls unless they happened to hit them during battle. But they would destroy any artificially-built walls without hesitation.

Even if monsters didn’t destroy them, they would be identified as foreign objects and the Dungeon’s self-repair function would cause them to disappear as if they were damage caused to the Dungeon.

Even though Vandalieu could use his Golem Transmutation skill to mine rock and minerals, he couldn’t make large changes to the structures of Dungeons.

However, the walls made by Labyrinth Construction changed the Dungeon itself, so it was highly likely that they would stay there.

“Monsters destroyed the walls you made with Golem Transmutation, but they simply avoided and passed by the walls you made with Labyrinth Creation,” said Darcia.