What is Dante's first reaction to the 9th circle of hell?

Dante is filled with Horror and disgust as he witnesses the tortures and punishments inflicted upon the souls in the 9th circle of hell, reserved for betrayers. He is particularly moved by the sight of Lucifer encased in ice at the center of hell and the three infamous traitors, Judas Iscariot, Cassius, and Brutus, being chewed by Lucifer's three mouths.