Caina
Caina is the first of four concentric rings of the Ninth Circle of Hell, a frozen lake called Cocytus, reserved for those who committed treachery against their own kindred. Named after the biblical Cain, who murdered his brother Abel, this zone punishes the violation of the most fundamental human loyalty—that of blood. Here the damned are not burned by fire or torn by monsters but are instead locked in an eternal, silent cold, their heads protruding from the ice, their tears frozen solid over their eyes, a punishment that mirrors the hardness of heart that led them to betray their own flesh and blood.
Location and Description
Caina forms the outermost band of Cocytus, the great frozen lake at the bottom of Hell. When Dante and Virgil descend past the giants and enter the well of the abyss, they find themselves on a lake that has the semblance of glass, not water, so thick that neither the Danube in Austria nor the Don under the frigid sky ever bore such a veil of ice. The shades within are livid, their teeth chattering like storks, their faces bent downward, and from their mouths the cold, and from their eyes the doleful heart, witness of itself. The ice locks their tears into crystal visors, so that weeping itself cannot find release, and grief turns inward to increase the anguish.
The Punishment of the Traitors to Kin
The sinners of Caina are immersed in the ice up to the point where shame appears—that is, up to the neck or face, leaving only their heads visible. They are not permitted the full submersion of the deeper rings; their crime, though grave, is considered the least heinous of the four types of treachery punished in the Ninth Circle. The cold is so intense that if Tambernich or Pietrapana had fallen upon it, even at the edge it would not have given a creak. The souls are locked in pairs or groups, their heads sometimes so close that their hair mingles, and they butt against each other like he-goats, their wrath still burning despite the frost.
Notable Inhabitants
Dante encounters several souls in Caina. He sees two brothers so closely pressed together that their hair is mingled; they are the sons of Count Albert of the valley where the Bisenzio descends, and they are considered the most worthy of being fixed in the gelatine of all Caina. Another shade, Camicion de' Pazzi, identifies himself and names others: Focaccia, Sassol Mascheroni, and he waits for Carlino to exonerate him. Dante also sees a thousand faces made purple with cold, and in walking among the heads, he accidentally kicks the face of one, who turns out to be Bocca degli Abati, a traitor at the Battle of Montaperti. Bocca initially refuses to give his name, but when another shade calls out to him, Dante learns his identity and threatens to report his shame. Bocca then spitefully names other traitors: Buoso da Duera, Beccaria, Gianni del Soldanier, Ganelon, and Tebaldello.
Narrative Significance
Caina serves as the first stage of Dante's encounter with the ultimate evil of treachery, a sin that Dante himself, as a Florentine exile who had experienced betrayal, regarded with particular horror. The frozen landscape of Caina, with its utter stillness and cold, contrasts sharply with the fiery torments of the upper circles, emphasizing the complete absence of love and warmth in those who broke the most sacred bonds of family. The ice that seals the tears of the damned symbolizes the finality of their damnation: they cannot even weep, for their grief is frozen within them. This zone prepares the reader for the even more terrible punishments of Antenora, Ptolomaea, and Judecca, where the ice deepens and the traitors are more fully submerged, culminating in the figure of Lucifer himself, who chews the three greatest traitors in his three mouths.

