The Skies of Dragon Song Valley

From the introduction: The Skies of Dragon Song Valley is intended for four characters with an average party level (APL) of 6. Characters who complete this adventure should earn enough experience to reach halfway to 7th-level. A winged creature plagues a valley steeped in ancient history. This campaign takes place in Arden, although it can be set in your own world. Any party composition should be able to finish the adventure with intelligent play.