Eisen placed the Dungeon Core down onto the floor, merely holding it up a little bit so that everyone could properly see it. "When we were down in the mine, I was using my Magic-Sight to look for places with a high concentration of mana to find High-Iron Ore more easily, and when I did, I found a place with no mana at all. I dug that direction and found a completely cut-off room, with this Dungeon Core floating in the center. It was pulling in the mana it needed, so that's why there wasn't any mana around for me to see." The old man explained, before continuing with the rest of what happened in that room, including his conversation with the Ghost of the person that seemingly created all the Dungeons in this world, as well as how he found the Blueprints for the Core Guardian.