Batterie des Roches

Batterie des Roches is a military fortress perched at 614 meters elevation on a cliff overlooking the Doubs valley, with defensive moats on its eastern and southern sides. Several military structures spread across the site, integrated with the natural terrain.

Built between 1877 and 1879, the fortress was part of the Seré de Rivières defense system designed to monitor the Doubs valley following the 1870 war. This fortification network represented France's strategic response to regional threats in the decades after that conflict.

The fortress functions as a nature observation site where visitors can witness researchers tracking migrating birds during peak seasons. This dual role connects military heritage with contemporary wildlife studies.

Visitors can join guided tours organized by the ASPIR association, with special programs offered throughout the summer season. The fortress sits on elevated terrain requiring moderate physical fitness to fully explore the site.

The fortress could communicate with neighboring forts through optical signals, forming an impressive long-distance communication network across the region. An underground shelter lies beneath the southern moat but remains closed to the public today.