Ephyra system

The Ephyra system is a star system within the Polona sector, in the Outer Colonies. The system contains the planet Netherop - a greenhouse world believed to have once-held a native technological civilisation. To the Covenant, the system is known as the Eryya system.

List of appearances

 * Halo: Silent Storm
 * Halo: Oblivion
 * Halo: Outcasts