
For humans, the alpine ecosystems provide habitat, the possibility of producing wood and some food. They also provide long-term maintenance of fertile soil, clean water and air, and protection against natural hazards. Protecting them is a duty.
Therefore, the authorities maintain all owners of livestock units (LU) that ensure communal harmony of the landscape. They have also enabled 'the They', in upper Finhaut, to reclaim the entire area in the process of agricultural abandonment (maintaining hay fields, irrigation, repair of dry stone walls, a trail-themed educational courses). Now the project 'Theys' also includes the fight against an invader, the hogweed.