The intelligence of a dungeon core varied from one dungeon to another. Some cores exhibited basic intelligence, limited to instinctual behaviors and reactions. They operated on a more primal level, focused primarily on protecting the dungeon and its treasures from intruders.
However, there were also dungeon cores that displayed a higher level of intelligence akin to that of a sentient being. These cores were capable of strategic planning, creating complex traps and puzzles to challenge adventurers. They could even communicate with those who ventured into their domain, either through telepathy or by manipulating their surroundings.
In any case, the end of the dungeon was like the interior of a large dome, round and large. The walls, the ceiling, and the floor were completely overtaken by a thick layer of ice.