A friend of mine and his friend both flew over Mt Baker in WA. in their ultralights. A plane that has a Rotax 2 stroke 35 hp. It's 10,500 ft. You must be talking on Oxygen over that altitude.
That’s pretty funny.
I was raised on a cattle ranch between Fairplay and Hartsel Colorado. The elevation at the post office in Fairplay is 9,950 feet. Most places in South Park are at 10,000 and above.
Never needed to wear an oxygen mask. My lungs might be a little more developed than most though. 😁
