English: Under the hills of St. Margrethenberg, there is an old artillery fortress from the time of WW2 located. The armored turret gun No. 3 of caliber 105 mm in the foreground (camouflaged with a cottage) is only 90 m away from the Restaurant Tristeli. On July 2, 1940 was this gun the first time fired for calibration. Tradition holds that the glasses are plunged from the rack in the restaurant. The cannon is located at a height of 1188 m. ü. M. (3897 ft ASL). The access tunnel in the fort is 32 m below the ground. A staircase with 150 steps leads up to the gun here. These guns were decommissioned in 1994. The metal cap on the round part of concrete in the meadow was one of three exhaust pipes from the engine room. This exhaust pipe had children once clogged with a ball, when the fortress was still active. An anecdote of retired military fortress guard Fidel Nigg. Switzerland, June 13, 2013.