Trench warfare in the Italian Alps at 3850 meters, World War I

Source

OccamsBeard: [Wikipedia](https://en.wikipedia.org/wiki/Ortler#First_World_War)

Lavrentio: It has been estimated that two-thirds of the Italian and Austro-Hungarian military deaths in the Alps (thus excluding the Isonzo and Piave fronts, that were the biggest meat grinders) during World War I were caused not by enemy bullets, but by the mountain itself – extreme weather conditions, avalanches, lightnings. [Example.](https://en.wikipedia.org/wiki/White_Friday_(1916))