In a last ditch effort, O'Neill activated an Ancient weapon in the Antarctic ...
Stargate SG-1
Season 8 Episode 9: Sacrifices
Teal'c is unhappy with his son's plans to marry. Ishta arrives bringing news that Hak'tyl may be compromised. Complications arise when O'Neill allows the residents of Hak'tyl to inhabit SGC until a new homeworld is found for them.