The Oberalpstock or Piz Tgietschen is a mountain in the Glarus Alps between the cantons of Uri and Graubünden. Its massif separates the valleys of Maderanertal and Surselva near Sedrun.
The Oberalpstock or Piz Tgietschen is a mountain in the Glarus Alps between the cantons of Uri and Graubünden. Its massif separates the valleys of Maderanertal and Surselva near Sedrun.