The Strada delle 52 Gallerie ("Road of 52 tunnels"), also known as the 52 Tunnel Road, or Strada della Prima Armata ("Road of the First Army") is a military mule road built during World War I on the Pasubio massif in Veneto, Italy.
The road winds between Bocchetta Campiglia (1,216 m) and the Porte del Pasubio (1,934 m) crossing the southern slope of the mountain with its spires, deep canyons and sheer rock faces, outside of the range of Austro-Hungarian artillery.
A masterpiece of military engineering and boldness (it was produced by the 33rd Miners Company of the Italian Army with the help of six hundred workers), considering the conditions and the time it was built, and the speed of execution. Work began on February 6, 1917, and was completed in November 1917.
Today it is a very popular and scenic hiking trail.