The White War, which ended in November 1918, took place between Austro-Hungarian Empire and Italy
Wooden barracks belonging to Austro-Hungarian troops on Mount Scorluzzo were locked up after conflict
Researchers entered the 9,000ft-high den for the first time in 2015 after ice encasing it melted
Artefacts they found are set to be preserved in a new museum opening in Lombardy town of Bormio in 2022