Mont César

Mont César is a protected natural area in Bailleul-sur-Thérain featuring dry calcareous grasslands surrounded by forest cover. The hilltop rises to approximately 138 meters and sits in the Oise department of northern France.

The hilltop served as a settlement location for Gallic camps and a Gallo-Roman oppidum in ancient times. No physical structures from these early occupations remain standing today.

The name Mont César recalls the ancient past of the region and its role in the area's story. Today, conservationists work to maintain the open grasslands and their natural character for visitors to experience.

A hiking route winds through varied landscapes with grasslands, marshes, and agricultural fields that takes several hours to explore. Visitors should wear sturdy footwear and be prepared for different ground conditions.

The soil here is distinctly dry and calcareous, which supports specialized plant and animal life rarely found elsewhere in the region. These specific conditions create a natural environment that stands apart from the surrounding landscapes.

Location: Bailleul-sur-Thérain

Website: http://conservatoirepicardie.org/site-naturel-le-mont-csar-de-bailleul-sur-thrain-143.html

GPS coordinates: 49.38667,2.23972

Latest update: December 14, 2025 13:00