Xynon

Xynon, is the homeworld of the borg collective, the planet is a rocky world but with borg cities and cybernetic implant structures, the planet's surface and the nearby moon is comprised of borg technology and has been completely assimilated by the machine. The Borg Homeworld consists of a population of roughtly 50 billion borg and several hundred million fleets of ships guarding the planet. Making an assault on this world nearly impossible. The planet is roughly the size of Earth and cannot support regular life other then borg based. The planet is extremely active and well defended with several space based weapons as well as an opening drilled into the planets core.