In 1916, Col di Lana became the site of fierce mine warfare on the Italian Front. Lieutenant Caetani of the Italian engineers developed a plan for mining the peak, which was executed silently using hand-operating drilling machines and chisels. At the start of 1916, the Austro-Hungarian army learned through an artillery observer on Pordoi Pass that the Col di Lana summit had been mined. The Austro-Hungarians began a counter mine, and exploded this on 6 April 1916. The counter mine was, however, too far away from the Italian explosive tunnel. This was laid with five tonnes of blasting gelatin. On the night of 16/17 April 1916, the 5th Company of the 2nd Tyrolean Kaiserjäger regiment was relieved by the 6th Company, under Oberleutnant Anton von Tschurtschenthaler. The struggle reached its zenith on the night of 17/18 April 1916, when at around 23:30 the summit was blasted. The Austro-Hungarians under Tschurtschenthaler then had to surrender the mountain; however they were able to maintain a position on Monte Sief, which is linked to Col di Lana by a ridge, which was cut in two by a mine fired on 21 October 1917 by Austro-Hungarian soldiers, thereby obstructing the Italian breakthrough in the area.