Dis is the name of the City of Dis, the capital of Lower Hell in Dante Alighieri's Inferno, which contains the most grievous sins like heresy and violence. The city is enclosed by walls guarded by fallen angels, and its gates must be forcefully opened by a divine messenger to allow Dante and Virgil entry. It is distinct from Upper Hell because the sins punished within are considered willful and malicious, rather than impulsive passions
