Gamma Quadrant homeworld of the Yaderans, taken over by the Dominion, which Rurigan fled to build his holographic village.
Yadera Prime is the homeworld of the Yaderans in the Gamma Quadrant. In Shadowplay, Rurigan explains that when the Dominion arrived and took control of his planet, he escaped to an abandoned world.
There he recreated the village and people he had lost as holograms powered by a particle reactor, a refuge that Odo and Dax discover when the reactor starts to fail. The episode is one of the early signs of the Dominion's reach across the Gamma Quadrant.