The two joked and laughed as they entered the cave.
The cave interior was indescribably eerie, as if it were man-made yet seemed naturally formed, a long tunnel that grew larger as they descended, plunging down twenty to thirty miles before suddenly opening into an underground world.
Not far away were remnants of walls and battlements, though eroded by time to the point of being unrecognizable; it seemed that a city once existed here!
The air was gloomy with a rotten smell, and large, black cloud-like formations the size of water jars fluttered everywhere.
These were the Prison Ghosts; it was said within the sect that in ancient times, a special race was cursed and slaughtered here, and their lingering resentment turned them into Prison Ghosts after death.