Great Rift — Observation Records

The Great Rift, also known as the Cicatrix Maledictum, tore the galaxy in two during the 13th Black Crusade. These observation records compile data from astropathic surveys, Mechanicus sensor arrays, and Inquisitorial investigations into the nature of the massive Warp storm.

The records document the catastrophic effects on interstellar travel and communication, effectively isolating the Imperium Nihilus from the light of the Astronomican.