A Dragon at Worlds' End(1997)

Christopher Rowley

Picking up where "Battledragon" ends, Bazil and his dragoneer Relkin find themselves lost in a vast and trackless jungle inhabited by the mysterious people called the Ardu. As the Ardu are captured and sold to the sadistic Elven-mage lords of Mirchaz, Relkin is kidnapped trying to help the Ardu--and it's up to Bazil to save the day!