From the back cover: Within this 96-page booklet is the most complete, detailed description of Tyr’s peoples, places, and plots ever. The premier city of the DARK SUN® campaign setting now lies complete for an Athasian campaign's player characters. Learn the city's history, attend a Council meeting, wander the city's business districts, and explore the mysterious Under Tyr - the ancient ruins of the forgotten city upon which Tyr was built