I am doubtful myself about the undertaking. Part of the attraction of the L.R. is, I think, due to the glimpses of a large history in the background:… - J. R. R. Tolkien

Far over the misty mountains cold
To dungeons deep and caverns old
We must away ere break of day
To seek the pale enchanted gold.

The dwarves of yore made mighty spells,
While hammers fell like ringing bells
In places deep, where dark things sleep,
In hollow halls beneath the fells.

For ancient king and elvish lord
There many a gleaming golden hoard
They shaped and wrought, and light they caught
To hide in gems on hilt of sword.

On silver necklaces they strung
The flowering stars, on crowns they hung
The dragon-fire, in twisted wire
They meshed the light of moon and sun.

Far over the misty mountains cold
To dungeons deep and caverns old
We must away, ere break of day,
To claim our long-forgotten gold.

Goblets they carved there for themselves
And harps of gold; where no man delves
There lay they long, and many a song
Was sung unheard by men or elves.

The pines were roaring on the height,
The wind was moaning in the night.
The fire was red, it flaming spread;
The trees like torches blazed with light.

The bells were ringing in the dale
And men looked up with faces pale;
The dragon's ire more fierce than fire
Laid low their towers and houses frail.

The mountain smoked beneath the moon;
The dwarves, they heard the tramp of doom.
They fled their hall to dying fall
Beneath his feet, beneath the moon.

Far over the misty mountains grim
To dungeons deep and caverns dim
We must away, ere break of day,
To win our harps and gold from him!

If you really come down to any large story that interests people – holds the attention for a considerable time ... human stories are practically always about one thing, aren't they? Death. The inevitability of death.

But it does not seem that I can trust anyone,' said Frodo.
Sam looked at him unhappily. 'It all depends on what you want,' put in Merry. 'You can trust us to stick with you through thick and thin — to the bitter end. And you can trust us to keep any secret of yours — closer than you keep it yourself. But you cannot trust us to let you face trouble alone, and go off without a word. We are your friends, Frodo.