P3S-114, a forested world dominated by a great pyramid, is one of the worlds of Ba'al's domain. Zarin, a Tok'ra operative undercover within Ba'al's ranks, had commanded Ba'al's garrison on the planet. When Earth's stargate became inaccessible, Teal'c and M'zel traveled to the planet to make contact with Zarin and the Tok'ra. Former NID agents of the Trust had been targeting Ba'al's worlds by sending rockets with the symbiote poison through the stolen stargate, and P3S-114 was selected as a target. Within moments of the attack, every Goa'uld, Tok'ra, and Jaffa on the planet was instantly killed, leaving only Teal'c alive.
Cross Reference: Ba'al, M'zel, Symbiote Poison, Trust, Zarin
Episode Reference: Endgame