The site extends about 2 km south of the village of Buzenol, on the left side of the Gros Ruisseau valley, in a largely forested environment (beech grove, among others). The cron, name given to the petrifying limestone springs, currently appears as a steeply sloping clearing facing south and tumbled down by rivulets with crystal clear water, which are fed by two springs located a little below the archaeological park of Montauban . There is remarkably contrasting vegetation and ecological conditions: thus an arid calcareous grassland with blue sesleria (Sesleria caerulea), an alkaline marsh with molinia (Molinia caerulea), dry or wet rocky slabs, a sedge meadow rub shoulders over a short distance. with scaly sedge (Carex lepidocarpa), pioneer thickets of willow (Salix spp.) and buckthorn (Frangula alnus), thermophilic preforest fringes, etc. The flora includes many rare species such as parnassia (Parnassia palustris) and flea sedge (Carex pulicaris), both highly threatened in Wallonia. The local fauna is just as remarkable: the site is, for example, the favorite habitat of a rare dragonfly, the bidentate cordulegaster (Cordulegaster bidentatus), whose larvae develop in the thin streams of water. On this same slope there are several other crons also very interesting but largely under forest cover.