The slopes of the mountains above the tree line are soft green and criss-crossed with countless small streams. A cool wind carries the sound of cow bells over to the weathered houses that hug the steep lopes. The highest, year-round inhabited village in Europe is called Juf and lies in Switzerland. Richard Luzi and the Menn brothers live here with their families. At an altitude of 2,126 meters above sea level, the farmers rely fully on the technology of the Fendt Vario tractors.