The previous Infernum dungeon, which was next to Tullan Broken Bridge, can be converted to farming materials from mobs. Later, it can be used to reef pet reinforcement manuals. A given material and number of manuals are upgraded into one Super Pet Manual, which is combined with the material obtained from the boss in a given location. This increases the success rate by 5%. For example.
In my opinion it was a very cool dungeon, use it