I can confirm it is difficult. Not in terms of climbing, but in terms of breathing. The higher, the smaller your steps. Above 6.000m do you 3 steps and 10 seconds of gasping for air or more. But the view on the summit, that was the most beautiful one I have every seen. You could see the shadow of the mountain, see below. In my case there where some clouds, which made it even more beautiful. https://80d2853cc4def76b377d-54344bc01a8b066c84096a8e7a3499a...