What is "unsampled"

Usage examples of "unsampled".

But go quickly for the magic that nothing may be left unsampled that may prove beneficial.

For the next five days, no leaf would go unsketched, no soil would go unsampled, no wildlife unstudied in all of huge Algonquin Park.

And then, having gained those last few feet, we did indeed stare across the momentous divide and over the unsampled secrets of an elder and utterly alien earth.