Hallows

Hallows is a vertical underground sector of Nessus in the Arcadian Valley. It is reached through a hole from the Artifact's Edge sector during the campaign mission Looped. Its main passage runs north from Watcher's Grave to the south exit at the Glade of Echoes. Its connecting areas also include the Sunken Cavern.

The sector is overrun with Vex and holds Vex landmarks, including the Vex Summoning Portal, which is heavily guarded and is where a Hydra is likely to be found. Enemy factions include the House of Dusk and the Sol Collective. Patrol Beacons are placed throughout the sector.

Public events include Spire Integration at the Vex Summoning Portal. Secret events include a High-Value Target and a Skirmish in the Rocky Alcove, where Fallen spawn. Its adventure is Hack the Planet, which starts with Key to the Network south of the Rocky Alcove.