Columbia is one of the three systems located inside the Voyager Cluster in Mass Effect, alongside Amazon and Yangtze. Columbia is probably named after the Columbia River, located in Canada. Within Columbia, you can find 4 Planets and 2 asteroid belts.
In order to unlock Columbia, you have to complete the UNC: Cerberus Assignment.
Planets
Ontaheter
Clojiia
Nepheron
Gromar
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