Which mountain is most difficult to climb?
I know it's not only height but also weather etc. But would like to know according to the ratio of death of climbers and with respect to ratio of unsuccessful climbs.
The standard measure for a mountain's difficulty is the ratio of summits to fatalities. Per Wikipedia, as of 2009, the hardest mountain is Annapurna I in Nepal, with a ratio of 157 summit ascents and 60 deaths, or 38%.
This means that, for every five people who reached the top, two died trying (or on the way back).
I'll stick to a nice brisk walk around the park, thank you...