EOS (HNS) - Vault Uncovered

EOS (HNS) - Vault Uncovered is an entry on the HNS terminal in the entryway of the Nexus.

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"An expedition to Eos in the Pytheas System has discovered a mysterious facility that authorities are calling a "vault." Though not much is yet known about the underground structure, it is believed to be Remnant in origin. Noted asari scientist Pelessaria B'Sayle: "What we activated in the vault drastically improved the atmosphere on Eos.""