Location: Milky WayGemini SigmaHan System Third planet

Prerequisite: UNC: Hostile Takeover (Mass Effect)
Prerequisite: Priority: Sur'Kesh (Mass Effect 3)


WARNING: Level 1 [sic] Cold Hazard

Mavigon is a small rock and ice planet with a thin atmosphere of ammonia and methane. The surface is frozen, and mainly composed of tin with deposits of potassium.

The planet has rudimentary ammonia-based life, mainly concentrated around geothermal vents deep underground. Severe storm cycles are common; due to limited visibility, navigation may be difficult.


Points of Interest

Mavigon tmap
Location Appearance Description
1 Initial Syndicate hideout (UNC: Hostile Takeover). Contains three Alliance Heavy Turrets.
2 Initial Engine debris (salvage, requires medium Electronics.)
3 Unmarked Mummified salarian (box) (UNC: Locate Signs of Battle)

“You discovered several small artifacts. Among them is an identification tag belonging to Captain Stranaka, one of the salarian soldiers charged with hunting down the League of One.”

4 Unmarked Abandoned camp (salvage unlocked crate and hardened crate (hard Decryption).)

Mineral Deposits

Mavigon SLI
Main article: UNC: Valuable Minerals
Location Element Class
1 Gold Heavy
2 Cobalt Light


Search and Rescue

Main article: Search and Rescue


The operational area on Mavigon features a heavy snowstorm, limiting long-range visibility. While much of the terrain can be traversed on fairly even terrain, some areas of interest would require the Mako traversing up and down sheer elevations to reach.


  • Although the in-game description text says that the cold hazard is level 1, when actually exploring the planet, the cold hazard is level 2. This is despite Mavigon being warmer than Xawin, which is level 1. Given that Mavigon has a strong blizzard at the time of Shepard's arrival, as opposed to Xawin, which is mostly clear skies, this weather difference may be the reason for the hazard's strength.
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