High in the Dolomites, Italian and Austro-Hungarian troops fought a front of World War One unlike any other, cutting trenches and tunnels through solid granite at altitudes where frostbite killed as often as bullets did. This History Hit film follows the personal accounts of soldiers ordered to hold sharp gullies and ravines, excavating fortified positions in freezing weather with hand tools, then hauling artillery up cliff faces that avalanches could sweep away in seconds. Historians walk the surviving tunnels and gun emplacements still cut into the rock, using period photographs and letters to reconstruct what daily survival meant for men fighting a war against the mountain as much as against each other. The film traces how the front shifted as commanders realized conventional tactics could not work at these heights, forcing new methods of mountain warfare that engineers and alpine troops improvised as they went. It is a account of a theater of the Great War rarely covered outside specialist histories.