Vallt was a planet located in the Outer Rim Territories that was the homeworld of the Valltii and Taqwa species, also the birthplace of Jyn Erso. Vallt was a cold world, with half the planet covered in glacial ice. The climate was often snowy and windy and quite inhospitable to off-worlders. Galen Erso and his team were working on Vallt for Zerpen Industries when the Vallt government was overthrown in a coup by those sympathetic to the Separatist movement. The planet thus shifted from being a Galactic Republic aligned planet to a Separatist one during this period.