Thrice round the mount he threw His vengeful eyes, thrice strove from earth to tear The stone, and storm the threshold, thrice withdrew, And in the vale sat down, and nursed his wrath anew.
XXXI.

"Sharp-pointed, sheer above the dungeon, stood A crag, fit home for evil birds to light.
This, where it frowned to leftward o'er the flood, Alcides shook, and, heaving from the right, Tore from its roots, and headlong down the height Impelled it.

With the impulse and the fall Heaven thunders; back the river in affright Shrinks to its source.

Bank leaps from bank, and all The mountain, yawning, shows the monster's cave and hall.
XXXII.

"Stript of their roof, the dark abodes far back Lie open to their inmost; e'en as though Earth, rent asunder with convulsive wrack, And opening to the centre, gaped to show Hell's regions, and the gloomy realms of woe, Abhorr'd of gods, and bare to mortals lay The vast abyss, while in the gulf below The pallid spectres, huddling in dismay, Looked up with dazzled eyes, at influx of the day.
XXXIII.