Lisbon Station

Lisbon Station is an orbiting outpost near Installation 05, otherwise known as Delta Halo. Similar to Ivanoff Station orbiting Installation 03, or Gamma Halo, this station's primary purpose is to study the Halo ring for decommission.

In the aftermath of the Covenant civil war, called the Great Schism, the victorious Sangheili fleet orbiting the installation glassed the surface with superheated plasma, as the ring's surface had been overrun with Flood. As seen in the holomap of Delta Halo in the Citadel on the Ark, the installation's surface is completely barren. It is unknown where the station's activation index is (the last person to have it was Miranda Keyes at the end of Halo 2) and how damaged the ring is.