Greina Alta
The Greina Alta trek leads from Curaglia (Disentis) to Zervreila (Vals).
The tour is all about the number 3, crossing a unique high alpine region with 3 SAC huts, 3 cultures and 3 languages, all under the spell of 3 mighty peaks - the Piz Medel, the Piz Terri and the Zervreilahorn.