The Spell of Destruction (2)

[On the underground dwarves searching for the heart of the mountain.]

Do you know the animal called a beaver?

Surprisingly, these mere animals spend their lives building dams.

They interweave branches to make dams in rivers, not because anyone told them to, but out of instinct.

There's probably no long-winded reason why these animals build dams.

The underground dwarves digging the earth is similar.

They want to mine precious minerals and refine them to make even greater things.

I judge that the driving force behind dwarves digging deeper into the earth is not much different from that of beavers.

In that sense, the 'heart of the mountain' is similar to the beaver's 'perfect dam'

Dwarves dig deep into the earth, saying they will find something called the heart of the mountain.

Often, they encounter massive lava zones in those deep underground areas.