Security Sublevel Sigma is part of The Elder Vault in Levian Bay.

Levian Bay Subzones
Exile Warbot · Greyshore · Jagged Cove · Seaspine Point · Star-Comm Station · Stormcaller Landing · The Elder Vault (Engineering Sublevel Theta · Security Sublevel Sigma · Surfskitter Cave) · Zin's Landing
Olyssia Zones
Auroria · Crimson Isle · Deradune · Ellevar · Illium · Levian Bay · Wilderrun

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