Pressha is a relatively small hydrogen-helium gas giant with large amounts of hydrocarbons in the middle layers of the atmosphere.
When the Krogan Rebellions ended three millennia ago, the turian chief of navel operations, a distinguished solder naked Mehrkuri, declared his immediate retirement. His disappeared into what was then uncharted territory. It was only two hundred years ago that his ship was found on the surface of Pressha's largest moon. It had landed gently, and had been deliberately shut down. Of Admiral Mehrkuri, however, no trace was ever found.