Getting there
Everything starts at Sion station, on the Simplon line. Postal buses climb the valley to Euseigne, Evolène, Les Haudères and Arolla on one side, and to Hérémence and the Val des Dix on the other. In summer, one line runs right up to the foot of the Grande Dixence dam. By car, leave the A9 at Sion and follow the Hérémence or Evolène road.
Good to know: the road passes literally underneath the Euseigne pyramids, through a tunnel bored into the moraine. Warn the children beforehand, it lasts three seconds and they will miss it otherwise.