It was cold down this deep. The slow rush of temperate water from the vents of the volcanoes did not do anything to improve the frigid temperatures all the way down here. Warm water rose, and the caverns at these depths did not retain the warm water very long. Melusine hurried along the old corridor, shivering in the chill.
There it was, just a narrow fissure in the rock. She was just barely able to squeeze inside through the gap. The fissure widened a few feet inside the rock face and then bloomed into an expansive vaulted atrium. A natural cathedral, still hidden in the lowest depths of the city after centuries of habitation. Melusine had found the beautiful place when she was just a child. She had spent the majority of her youth exploring and hiding in the various nooks and crannies of her home. In an attempt to avoid her studies, she would evade her nurses and spend hours exploring the winding mazes of cave systems. One day she slipped inside that crevice while avoiding her nurse and stumbled into the massive cavern. It had become her secret home, and she felt more comfortable here than she did with her family. She was undoubtedly an introvert, and the cavern gave her the privacy and quiet that she could not get at home in the courts of the royal palace. Her treasures were kept here, and no one had ever discovered her hiding place.
Once inside, Melusine released a pinch of powder into the room. The plankton lining the walls and ceiling of the places hated the mineral and showed their displeasure by emitting a faint blue light. However, when millions of them were collected and grown together they could brightly illuminate a hundred-foot dome. Melusine ascended into the glowing blue dome of the room and fished a small, waxed scroll off of the natural shelf the ringed the inside of the dome. The rim was covered in books, tablets, scrolls, and exotic objects that she had "collected" over the years. In reality, her "collection" was mostly pilfered. A great number of the documents were stolen from the storage room in the great royal library. Once things were selected for storage, they were generally never seen again. Her items were not missed, and often presumed destroyed or already put away in boxes. Melusine took great advantage of the librarians' complacency. She had stolen well over one hundred texts from the storeroom. However, recently, her sticky fingers had gotten her in a nasty bit of trouble.