Originally an important Asgard world, Halla was designated by the High Council to be the planet where a massive experiment would take place. Preparing a trap with a time dilation device, the Asgard initiated a command to bring forth all Replicators in the galaxy to the planet. Now the planet is home to every known Replicator in the galaxy, until the time comes when the machines' flaw can be repaired. The planet's surface has been terraformed by the machines, with virtually every inch of its surface covered with layers of Replicator blocks. HOME TO - Destroyed FIRST APPEARED - Unnatural Selection KEY EPISODE(S) - Unnatural Selection - At Thor's request, SG-1 takes the Prometheus to Halla to activate the Asgard's time dilation device in the hope of trapping the Replicators. They find that the world has been completely transformed with Replicator blocks.  |
