Photo : JGS25 / Wikimedia Commons (CC BY-SA 4.0)
The Brême, a tributary of the Loue, has the particularity of partly disappearing into a chasm, called the Puits de la Brême or Black Well. The water lost in this chasm joins an underground river and rejoins the Loue about ten kilometres further on. In times of high water, the opposite phenomenon occurs: the chasm pushes water back and swells the Brême with its waters.
The Malbuisson blue spring is a karst spring or resurgence, a waterfall and a stream of Malbuisson, which flows into Lac de Saint-Point, in the Jura massif.
Among the great sites of the Doubs, the Cirque de Consolation is probably one of the finest landscapes of the département.
The Valbois stream rises on the plateau, crosses its edge by a 40 m waterfall, then joins a tributary of the Loue.
It could contain Notre-Dame cathedral of Paris! Giving access to an immense hall that gives us from the entrance the feeling of entering a sacred place, the Poudrey chasm takes us 70 metres below ground.
