PARKER, I watched my nephew do that on some damn high cliff-face in Red Rock Canyon.
When he reached the top of this peak he did a back-flip and landed on a small pebble and lost his balance momentarily but did not fall.
He was a Cirque Du Soleil performer at that time so I knew he would survive even if he was two miles higher. (Most, but not all, Cirque performers just bounce.)
Now one of the younger family members teaches rock -climbers in some fancy rock climbing 'gyms' in Nevada.
But I've been out of the picture for so damn long, I don't even know if the subject is referred to as "rock -climbing' anymore. Is "bouldering" the proper terminology?
In my day I was considered to be crazy simply because I did everything possible to climb the highest trees I could find.
Today I personally prefer two step ladders.
And in my case anything higher would be "bold-er-ing".