I was terrified about the helicopter ride, too. I am afraid of heights and claustrophobic...not a good combo. Left fingernail impressions in my hubby's hand! But, it was still worth doing....even he agreed. You just can't see anything like this any place else or anyway else, unless you spend days there and hike it. Even then, you could not see the whole thing. I won't do it again, but I am very glad I did it once. One way I dealt with it was by using my camera...looking through the view finder when I started freaking out distracted me and still let me see what I might be missing.