The Saltah'na homeworld was the formerly inhabited fifth planet in its star system. This system was located in the Gamma Quadrant. It was the homeworld of the Saltah'na until their extinction.

In 2369, on a bio-survey mission to the Gamma Quadrant, the Klingon Vor'cha-class starship IKS Toh'Kaht visited the planet on the twenty-second day of its mission. After the planet was explored, it was rejected as a potential future site for a Klingon colony. The crew discovered the energy spheres which possessed a telepathic archive. The archive described a power struggle which ended with the destruction of the Saltah'na. (DS9: "Dramatis Personae")

This planet was only mentioned in dialogue.
According to Star Trek: Star Charts (p. 74), this planet was located in the Saltah'na system. The primary was a M-class star. The system was a location visited by the Gamma Quadrant Bio-Survey (2369-75).