Kol'na of the High Cliffs was a male Jaffa who agreed to met with Teal'c and Hak'nor of the Cord'ai Plains at the Chompka Groves on Chulak, to discuss the Jaffa Rebellion in 2000. When Teal'c was betrayed by Rak'nor and Ma'kar of the Gomai Foothills, their meeting location was discovered. His fate is unknown but he was almost certainly killed. (SG1: "The Serpent's Venom")