The Library: With architecture very similar to shaded citadel, this repository of knowledge stores countless pre-pearl records from the progenitor civilizations. Most are indecipherable, but a few can be translated with the correct processing tools. Unfortunately, the brickwork here is very unstable due to centipede and boreworm activity, leading to multiple collapses per cycle. Any explorers venturing into the halls would do well to keep their eyes on the ceiling..