Caves of Sare

The Caves of Sare (French: Grottes de Sare, Basque: Sarako lezeak) form a group of five karst caves in the commune of Sare, in the French Basque Country, département of Pyrénées-Atlantiques, region of Nouvelle-Aquitaine. The site ranks among the oldest documented traces of human presence on the French side of the Pyrenees and is now open to visitors as a lit underground walking route.

How many caves make up the site?

The complex consists of five individual caves: Lezea, Urio Gaina, Urio Behera, Leze ttiki, and Faardiko harria. Water carved galleries, chambers, and narrow passages into the limestone hills that rise behind the village of Sare. Lezea is the best studied of the five and the one most extensively shown to visitors.

How far back does human occupation go?

The earliest evidence dates to the Mousterian period, at least 45,000 years ago, represented by stone scrapers and flakes. A later occupation layer belongs to the Gravettian, roughly 25,000 years ago, marked by burins and points. The most recent hunter-gatherer traces come from the Magdalenian, around 13,000 years ago, with blades and scrapers recovered from the sediment. Much later, during the Neolithic and Bronze Age, farming and herding communities used the Lezea cave, leaving behind pottery fragments and the bones of domesticated animals in the archaeological layers.

Did animals live here too?

For thousands of years the caves served as a hibernation site for cave bears, an extinct species closely related to the modern brown bear. Today thirteen bat species inhabit the caves, protected since 1999 by the Regional Conservatory of Natural Areas of Aquitaine and the Aquitaine Chiroptera Group. The richness of this fauna, alongside the surrounding flora, has led to the site's inclusion in the Natura 2000 network.

What does a visit actually involve?

Guided tours follow a sound-and-light circuit and last roughly one hour. Lighting picks out distinctive rock formations — ledges, tube-like passages, and meanders — while the narrated tour weaves in Basque mythology, introducing figures such as the Lamiak spirits and Guillen, said to be the genie of the springs. Above ground, next to the cave entrance, a freely accessible megalithic park displays reconstructions of dolmens and other megalithic structures typical of the Basque Country, alongside a museum dedicated to José Miguel de Barandiaran, the noted Basque scholar of prehistory and ethnography.

How should a visit be planned?

Because the number of people allowed underground at any one time is limited, advance booking is required. Guided tours are offered in French, Basque, Spanish, and English, making the site accessible to visitors from across the region and beyond.

FAQ

Are the caves really located in Sare rather than Ustaritz? Yes. The caves sit within the commune of Sare, in Pyrénées-Atlantiques, as confirmed by both local tourism sources and geographic data. Some records list the site under the neighbouring commune of Ustaritz, but that attribution is incorrect — both communes lie in the same département, though Sare is the correct location for the caves.

How long does a visit take, and do I need to book ahead? The standard guided route takes about an hour, and reservations are required because only a limited number of visitors can go underground at the same time.

Is the site suitable for families with children? The route is set up for regular tourist traffic, with lighting and marked paths, making it suitable for family visits.

What else is there to see besides the caves themselves? A megalithic park on the surface and a museum devoted to Basque prehistory and ethnography, named after José Miguel de Barandiaran, are both included and freely accessible without extra restrictions.

Do animals still live in the caves? Yes — thirteen species of bats, protected under conservation measures in place since 1999, which also contributed to the site's Natura 2000 designation.