The hidden chamber where delegates of the five surviving Xindi species met to govern their people and to direct the building of the weapon aimed at Earth.
The Xindi Council chamber is seen throughout the third season of Enterprise, from The Xindi onwards. Two representatives of each living Xindi species, Primate, Arboreal, Reptilian, Insectoid and Aquatic, meet there around a central table, the Aquatics watching from a water-filled tank.
It is where Degra, Mallora, Jannar, Dolim and their colleagues argue over the testing and launch of the weapon, and where the suspicion between the Reptilians and the others is plainest. The chamber lies in an old stronghold of the extinct Xindi-Avians, reached through subspace vortices.
In The Council, Archer is allowed to speak there and lays out evidence that the sphere builders have deceived the Xindi about humanity. The session divides the Council, and soon afterwards Dolim murders Degra.