Bionaz (pronunciation Biòna) consists of 21 small villages scattered over the sunniest slope, on the lower side of the area.

Books on the area describe Bionaz as:

• a village in Aosta Valley holding the record of high mountains, as 70% of its territory is higher than the highest pastures;
  
  
• a village which has had the same population since 1860 (quite a rare fact);
  
  
• a village surrounded by glaciers;
  
  
• the village of walser legends;
  
  
• the village of sunlight and high peaks;
  
  
• the village famous for “fontina” cheese;
  
  
• a boundless kingdom for mountain-climbers;
  
  
• an almost unknown and uncontaminated village;
  
  
• the village with the largest arch-gravity dam in Italy;
  
  
• a mountain pearl;
  
  
• a unique, picturesque alpine pasture;
  
  
• a hospitable mountain refuge.
  

But Bionaz is also something more difficult to describe: it is the magic of traditions which, thanks to particular historical and geographical circumstances, have remained uncontaminated in the course of ages.