A very good and scary adventure in an unusual setting. It is location-based more than scene-based, and the author manages to cram a lot of useful info in it, more than you find in a typical RPG scenario. It isn't an easy one, expect adventurers to die easily if they aren't able to plan their moves. Despite being made for LOTFP, it can be easily converted to other game systems.
The layout and the art are excellent, too.