From publisher blurb: From Sky Reavers, to Darma, to the great Leviathan, there are many creatures that live within the Great Chasm. What are they like? What do they eat? Who do they eat? To find out, use these guidelines to create your own creatures to bedevil your explorers as they delve into the depth of the Great Chasm. For use with the Into The Chasm series of adventures, it comes with a blank creature sheet, and four sample creatures that your explorers can encounter deep in the Great Chasm.