"I feel I am an explorer in some unknown wilderness: this boy," the doctor remarks to himself, ruefully, of his apparent destiny.

Rochard's World was thinly colonized, an almost unknown wilderness starting just three hundred kilometers beyond the city.

But beyond the safe waters lies a wilderness, unmapped and unknown.

Just a handful of people settling in an unknown wilderness, where we don't know anything about anything?

They will scarcely venture into this unknown wilderness at night.

They drive their horses across the Clinch River to start their journey into the unknown wilderness.

"Stark naked, in an unknown wilderness, hunted like wild animals, and without a hair to our name, and he thinks he's winning!"

These paintings helped to promote the region at a time when the White Mountains were an unknown wilderness.

Because you just wrote a book about truth, and isn't truth by definition an unknown wilderness?

As a philosopher, I'm not obliged to explore every unknown wilderness.