A Y-class planet that the hologram leader Iden chose as a homeland for his freed holograms, giving it a Bajoran name meaning home of light.
Ha'Dara is the planet Iden selects in Flesh and Blood as the place where the holograms who escaped the Hirogen can build a society. Because it is a Y-class world, inhospitable to organic life, the holograms intend to use a field generator developed by Kejal to live there. Iden gives it a Bajoran name meaning home of light.
Iden's plans grow darker, and he brings captured Hirogen to the surface to be hunted. The Doctor stops him there before he can kill the Hirogen leader, ending his rule over the holograms.