Nice grab Cuttle. Weren't you the one who was going up there with your Dad? If you are I figured you would be the one to grab the tag. And the key word in the clue was assault as Geeez mentioned. Big bike race called the Assault on Mt. Mitchell every year plus the elevation on the sign as well as the view were pretty good hints as well.
"The crashes people remember, but drivers remember the near misses."
- Mario Andretti
Four wheels move the body. Two wheels move the soul.
Calling upon my years of experience, I froze at the controls.”
– Stirling Moss