From back cover:Kobolds! The weakest and most cowardly creatures you can imagine. Then why are they killing you? If by chance you should survive, rest assured that this is only the beginning. In the depths of Calrouchan, a single mistake is the first step towards eternal damnation.A magnificent dungeoncrawl! The first in a series of D20 products from Muspelheim press. Calrouchan is a challenging adventure for 4-6 characters of 8th or 9th level. Detailing the enormous complex of Calrouchan, this adventure can fit into any campaign. - BoardGameGeek