Stargate Infinity Episode 23 - The Natural Episode Title:The Natural.Episode Description:Having escaped a Tlak'Kahn ambush, the team arrives at a planet covered by sulphur clouds, uninhabitable except for high elevations. To cope with the troubles with transportation, Major Gus Bonner calls his old friends for help—the pterodactyl-like Heruun he'd met before. But when Harrison falls for his death into the sulphur clouds, he'll have to learn the difference between machine and animal to survive.