Sullen Gulf

Sparse starry void located in a galactic arm.

The Sullen Gulf debuts in 'Consider Phlebas' as a sparse starry void in a remote galactic arm, embodying the vast emptiness of the universe amid the Idiran-Culture War. Though it receives scant development across the series, its mention underscores the immense scales of conflict and exploration in Iain M. Banks' Culture universe. No significant evolution occurs in later books, leaving it as a poignant symbol of cosmic desolation.