Siberia was a remote region of Russia, bordering the Chinese province of Xinjiang. ("Day 4: 5:00am-6:00am") Owing to its isolation and inhospitableness, the Soviet Union established the gulag network of prisons in northern Siberia. ("Day 1: 10:00am-11:00am") IK-10 was a Russian labor camp and penitentiary in Siberia. Red Square member Davros was incarcerated there, later escaping and receiving a tattoo of a three-spired building to indicate his three life sentences. ("Day 8: 7:00pm-8:00pm")