Mount Calisio (also known as Argentario) is a 1,096-meter peak located between the municipalities of Trento and Civezzano. It is part of the Monte Croce-Sette Selle mountain chain.
The area below (the Argentario Plateau) was once home to important silver mines, which declined in importance in the 15th century. The area, semi-abandoned for centuries, was rediscovered in the 20th century with the ever-increasing growth of residential areas. Mount Calisio features an underground fortification built by the Austrians starting in August 1915. It was one of the largest and most modern structures in the Trento fortress, with a classic "H" shape consisting of two galleries, 250 and 160 meters long, and a connecting tunnel. Later, 10-12 meter vertical concrete shafts were dug to install two howitzers in armored cupolas. The bases of the M16 aircraft can still be seen on the summit.
Today, Mount Calisio is crisscrossed by numerous hiking trails maintained by the SAT (a subsection of the Italian Alpine Club) in collaboration with the Argentario Ecomuseum. The summit offers a fabulous view of the Adige Valley and part of the Valsugana.