This post deals only with those travelers with lung issues.
I have involved lung disease and did not realize the problems I would have with elevation sickness. Please those of you who suffer with COPD or related disease
check with your pulmonologist before you go. I wish I would have!
I will never forget the majesty, grandeur and beauty of the GC but I had to cut my trip short! The 7,000 ft elevation is a danger for those with this issue.