Half-way down Les Toutous
at intersection B8, take a welcome detour via La Sous-bois, which takes you past some wooden areas into the ski hills and past timbers and tree trunks.
La Sous-bois also allows you to cut across from the B trails to the A trails, either via La BR
" at intersection B7, or La Traverse du Pitch
at intersection B4. It ends at intersection B5 where it joins back with La Lactique
, a few meters uphill of intersection B3 and La Argenteuil
It's 490m long but very narrow between the trees in certain areas, but the locals have been working on improving the transitions by building bridges and clearings.