Singing Planet

The "Singing Planet" is the name by which the Rachni Queen refers to her species' homeworld. Its location is unknown, and it has no official Citadel-approved designation, as the only species that has ever visited it and survived were the krogan, and they are not in the habit of naming things. It is a toxic place, unviable to most species. Since the end of the Rachni Wars, it has been mostly uninhabited, as the krogan wiped out most of rachni.