On the way back to Sagrado, after one kilometre and a half past from San Martino del Carso, you can visit the so-called "Battle Area", a zone where the first Italian attacks against the Habsburg line were launched in the summer of 1915. Leave your car in Via Piantella and walk along a cart track that turns into a trail later on.
The area is dotted with passageways, trenches, fortifications and structures built by both Italian and Austro-Hungarian armies. Among these, the Trench of the Frasche used to be one of the hardest obstacles for the Italian soldiers during their first assaults. Excavated by the Habsburg Army in the early stages of war, it was only lost at the end of 1915. Its name comes from the clever camouflaging devised by the Hungarian soldiers, who would cover it with tree branches to avoid recognition by observers and airplanes.
This is also the place where Filippo Corridoni, one of the leaders of the revolutionary union movement and a personal friend of Benito Mussolini, died on 23rd October 1915.
Today, visitors can see some ruins of some fortifications built by the Italians between autumn 1916 and early 1917. Along the entrenchment, visitors can observe a military tunnel which used to connect with other lines in this area, in particular the Sinkhole of the 15th Marksmen Regiment (Dolina del 15esimo Reggimento Bersaglieri) nearby.
