There Dante sees sinners who were not kind or nice to their family members embedded in the frozen lake all the way up to their necks. Right after them are the sinners who are not partial their country or state. They are frozen as well but this time it is all the way up to their head. Dante also comes across sinners who were not hospitable to their guests. They are cascaded over the frozen lake on their backs, not able to get up. The last group he sees is those that sinned by not staying loyal or true to their benefactor. They are completely submerged in the frozen lake.
Lastly Dante comes across Lucifer who has three heads. He has swallowed and chewed up three great traitors of all time, Judas, Brutus, and Cassius. He does not talk but simply chews up these men. Perhaps the symbolism here can be seen as the three heads representing the trinity of God. The father, the son, and the holy sprit. Dante eventually walks over Lucifer, his body pierces through the center of the earth, and Dante makes it out of