C597 Pass Activated
The catacombs on the ninth floor were so large that the walls had become solid rock.
Even if this kind of rock was smashed with ironware, it would take a few hits to create a small hole.
Furthermore, the force needed to be huge. This was a type of rock called Iron Cliff, and it was an extremely hard rock.
One could imagine how much effort it took to open up the ninth floor of the tomb
