Vecteur Montagne – Barefoot exploration of the protected wetland area “Tourbière de Sommand”

The bog “La tourbière de Sommand” is a protected wetland in Hautes-Savoie at 1417 altitude.



The bog is composed of sphagnum moss, which can absorb water up to 16 to 26 times their dry weight depending on the species. In case of heavy rain the bog plays an important role in regulation excess of water.

Traces of Bark Beetles on the pines. Due to global warming, the population of Bark beetles has exploded in some areas and kills trees that have become fragile due to long periods of drought.


Carnivorous plants : the round-leaved sundew (Drosera rotundifolia) has adapted to environments poor in nutrients such as bogs, by feeding on insects.

Cottongrass (Eriophorum) was used for stuffing pillows, but is now a rare and protected species in the bog.

Additional information

Website: Vecteur Montagne

Overview of plants of bog ecosystems (in French)