Turtmann is a small village in the canton of Valais (yes, the same like the Matterhorn) and an active Swiss Air Force Base 'till 2003. Only in duty about 3 weeks a year, this base included two mountain caverns (Xaver and Yvonne) and was home to different Jet's along the years. I've seen only Tigers there, but here on the site you can also find some Hunter aircrafts (and one Mirage !).