SG 1895 Adventure 1: The Feathered Serpent

From the publisher's blurb: The Explorers begin their adventures at a critical moment in Goa'uld History, the Great Civil War. After centuries of relative peace between the Goa’uld System Lords, the To'kra (rebel Goa’uld) have managed to sow distrust and discord between the members of the Goa'uld council. Ra and Anubis, in particular, have begun a series of escalating engagements about the possession of a number of Naqada-rich mining worlds (Anubis is not yet ascended).