"Paradox and Truth" (Legendary)

The Pyramidion is a location in Echo Mesa, Io. It is a Vex stronghold and a key part in the Vex's campaign to transform Io into another machine world.

History
Soon after the defeat of Ghaul, a Guardian fireteam ventured into Pyradmidion to defeat Brakion, Genesis Mind, which was attempting to convert Io into another Vex machine world.

After the Guardian met with Osiris, the Guardian ventured into the Pyramidion to retrieve a map of the Infinite Forest and locate Panoptes.