The oppidum of Ensérune is an archaeological site containing the remains of an ancient Gallic village. This national monument is located on a hill in Nissan-lez-Enserune, in the department of Herault. An oppidum is a large fortified Iron Age hill town.
This village was occupied between the 6th century BC (Iron Age) and the 1st century AD. It was located close to the Roman road, the Via Domitia, overlooked the lake at Montady and was surrounded by furtile land.
The oppidum of Ensérune went through phases. It started as a Greek trading post, then became a Gallic hill fort. It was quite prosperous after the Roman invasion before falling into obscurity.
The museum on the site displays Gallic, Roman, Greek and Spanish pottery, tools and other archeological finds and gives information on the history of the oppidum of Ensérune.
Below the oppidum is the spectacular Étang de Montady, a former swamp drained by monks in the 13th century. It is now a huge circle of wedge-shaped fields separated by radial irrigation ditches that converge in the centre. From there it was drained many kilometres away through underground pipes.