Very nice
There is a place on the Appalachian Trail called the knife's edge. It is a long run of granite blocks pushed up on edge. Going across there with a heavy pack can only be done if you keep moving, if you stop you are in trouble---I had the same feeling watching that video.
"A pessimist sees the difficulty in every opportunity, an optimist sees the opportunity in every difficulty” ---Sir Winston Churchill
"Political extremism involves two prime ingredients: an excessively simple diagnosis of the world's ills, and a conviction that there are identifiable villains back of it all." ---John W. Gardner
“You can’t go back and change the beginning, but you can start where you are and change the ending.” ---C. S. Lewis