This element of the community system allowed the inhabitants of the valley to place their cows into the charge of a guardian who would be responsible for them as they enjoyed the high-altitude pastures in summer. Mountain dwellers were thereby free to participate in the hay cutting and other agricultural activities close to the villages.The cow barns which you can see on the Erps and Le Cavalet circuit were temporarily used during the summer, which explains why they are small. Today, only two farmers still work on the site of Boréon, owning or hosting thirty or so cows each.