Kawawn is a planet in the Milky Way galaxy has a Stargate. The planet was earlier in Apophis control and he had naquadah mines on the planet. And Teal'c tells the Tau'ri that once ordered Apophis to seal the mines. And a few days later opened the mines and all the Jaffa who were trapped were dead except one Ashrak who had killed all Jaffa. (SG1: "Allegiance")