Prehistoric settlement is proved by finds on both sides of the valley.
The first documentary evidence goes back to the testament of Tello, Bishop of Chur around 765, in which four of the six villages are mentioned. At the time of the Franks the territory belonged to the Ministerium Tuverasca, which embraced the upper part of the Vorder Rhine valley. After the decline of the old Carolingian Duchy, it split up into several separate territories, which the Barons of R z ns took into their possession in the 14th century. In the 13th century the Barons of R z ns became the landlords of Obersaxen and the bailiffs of the Walser colony. In 1343 they acquired the sovereign rights of J rgenberg and Friberg, together with the villages of Waltensburg, Andest, Ruis, Panis, Seth and Schlans.