In the passage above, underline expressions describing hell. What are the most distinguishing features of this place?

the space that measures day and night

To mortal men, he with his horrid crew

Lay vanquished, rolling in the fiery gulf

Confounded though immortal: but his doom

Reserved him to more wrath; for now the thought

Both of lost happiness and lasting pain

Torments him; round he throws his baleful eyes

That witnessed huge affliction and dismay

Mixed with obdurate pride and steadfast hate:

At once as far as Angels ken he views

The dismal Situation waste and wild,

A dungeon horrible, on all sides round

As one great furnace flamed, yet from those flames

No light, but rather darkness visible

Served only to discover sights of woe,

Regions of sorrow, doleful shades, where peace

And rest can never dwell, hope never comes

That comes to all; but torture without end

Still urges, and a fiery deluge, fed

With ever-burning sulphur unconsumed:

Such place Eternal Justice had prepared

For those rebellious, here their prison ordained

In utter darkness, and their portion set

As far removed from God and light of Heaven

As from the Center thrice to the utmost Pole.