The bunker on Rolando Street in the Monte Mixi neighborhood is one of two built during World War II designed as a fuel depot. It was designed by the Civil Engineers and built by the Roman firm Ansoldi in 1942. It is visible to the right of the stretch of road leading from Viale Diaz to Viale Poetto. The area of about seven hectares also contained other buildings that still exist today, such as the former St. Bartholomew’s district and the Municipal Police Headquarters; other buildings were demolished after World War I to make way for apartment buildings for residential use. The other bunker is about 150 meters away and is located on Montemixi Street, near the sports hall. Originally intended to hold jet fuel, both were decommissioned around the 1980s. They appear today with a compact structure very similar to stone, actually reinforced concrete. The first and only subject of the visit is located at street level while the other is slightly underground. The plan is square and measures 36 meters on each side while the interior has a height of about 6.50 meters and leads into a second room above. A series of supports holds the structure, which is completely encased in iron so that it is waterproofed, up to a height of six meters, the maximum level reached by the fuel. The structure is supported by 36 circular-section columns covered with iron plates. The upper level could be accessed from the reservoir below via iron stairs, as there was originally no access from the ground level. The separation of the two levels is easily seen from the outside. Access is currently facilitated by the presence of a shutter on the street level, made by cutting part of the wall and the iron layer. Following decommissioning by the Air Force in the early 1980s, today there is a driveway entrance formerly used in previous years for the passage of vehicles, having been reused as a municipal depot, Remnants of the piping and float used for refueling and its subsequent withdrawal can be seen inside.
