vieille église

Vieille Église is a rock shelter (abri sous roche) in the commune of La Balme-de-Thuy, in France's Haute-Savoie, and one of the most significant prehistoric sites of the northern Alps. It sits in a south-facing Urgonian limestone cliff on the right bank of the Fier river, within the Préalpes de Bornes range near the Thônes valley, at an elevation of roughly 620 metres above sea level. The southern orientation gave early inhabitants shelter from wind and long hours of sunlight through much of the day.

How big is the shelter itself?

The overhang covers an area of about 600 square metres, running roughly 40 metres in length and 14 metres in depth. That scale makes it one of the larger rock shelters in the region, spacious enough to support a group of hunter-gatherers over an extended stay rather than a brief overnight stop.

Who were the first people to use this site?

Excavated occupation layers point to a human presence going back to the Epipalaeolithic, the tail end of the last glaciation, when the climate was cold and dry. The oldest levels are dated to between roughly 14,000 and 10,000 years ago. After the Epipalaeolithic, the shelter continued to be used through the Mesolithic and into the Neolithic, with successive layers documenting changing stone tools and bone remains. This long, unbroken sequence has made the site a reference point in archaeological literature on the Neolithisation of the Alps; one particular layer, labelled 5B, has been the subject of dedicated research debating whether it belongs to the final Mesolithic or the earliest Neolithic.

Where does the name "Vieille Église" come from?

The name, literally "old church," does not refer to the prehistoric shelter itself but to its neighbour: just below the overhang, beside the road, a separate small cave has long served as a place of worship dedicated to the Virgin Mary. The pairing of two caves side by side — one holding a prehistoric record, the other a devotional function — gave the whole site its present-day name.

What should visitors know before coming?

The site was listed as a monument historique by a decree dated 19 February 1979, reflecting its scientific importance and the need to protect it. For visitors, the main draw is the chance to see a natural rock shelter that has changed little over thousands of years, and to picture how hunter-gatherer groups once took refuge here from the elements. The surrounding Fier valley and Préalpes de Bornes add limestone cliff scenery typical of this part of Haute-Savoie.

Frequently asked questions

Is Vieille Église a cave or an actual church? It is a rock shelter cut into limestone, not a religious building. The name comes from a neighbouring cave used as a Marian shrine.

How old are the traces of human occupation here? The earliest layers date to between 14,000 and 10,000 years ago, from the Epipalaeolithic period.

Is the site legally protected? Yes, it was registered as a monument historique in 1979.

Where exactly is the shelter located? In the commune of La Balme-de-Thuy in Haute-Savoie, on the right bank of the Fier river, at the foot of the Préalpes de Bornes.