Piz Giuv (or Schattig Wichel) is a mountain of the Glarus Alps , located on the border between the cantons of Uri and Graubünden. At 3,096 metres above sea level, it is the highest mountain of the Glarus Alps lying west of the Oberalpstock . Its summit is situated between three valleys: the Fellital and Etzlital on the north side and the Val Giuv (Surselva ) on the south side.