Almost at that aerial mountain's feet,

  Deep under earth, extends a gloomy cell.

  The surest pass for him, as they repeat,

  That would at any time descend to hell.

  Hither the predatory troop retreat,

  As a safe refuge from the deafening yell.

  As far, and farther than Cocytus' shore

  Descending, till that horn is heard no more.