Although Mount Nancy is officially trailless, a visible path climbs to the summit from Norcross Pond.

With a summit elevation of 3,926 feet (1,197 m), it is one of the New England Hundred Highest peaks.

It was at the point where this stream comes foaming from Mount Nancy into the great ravine that the girl whose name is given to it was found frozen to death in a shroud of snow in the fall of 1788.

She had set out alone from Jefferson in search of a young farmer who was to have married her, and walked thirty miles through trackless snow between sunset and dawn.

Her recreant lover went mad with remorse when he learned the manner of her death and did not long survive her, and men who have traversed the savage passes of the Notch on chill nights in October have fancied that they heard, above the clash of the stream and whispering of the woods, long, shuddering groans mingled with despairing cries and gibbering laughter.