Book: Crucible Arenas.
ARENA DESIGNATION: Crossroads
LOCATION: The Lost Oasis, Mars
An active Vex structure on Mars with no Cabal vying to occupy or destroy it is rare. Even rarer is such a facility abandoned by the Vex themselves.
Detailed analysis of the site estimates three separate ecosystems that the landscape could support, if the area had any wildlife to benefit from it. A Hidden report to Ikora mentioned, “They clove this ruin out of the land, possibly to defend themselves from a long-vanished enemy, or perhaps to isolate the land for experimentation.”