Grotte de la Luire

Grotte de la Luire is a karst cave in the Vercors massif, within the commune of Saint-Agnan-en-Vercors in the Drôme department of France. The site carries a double significance: it ranks among France's largest cave networks, and its entrance was the setting for one of the most painful tragedies of the French Resistance during the summer of 1944.

Where is Grotte de la Luire located?

The cave opens in the Vernaison valley, in a remote and hard-to-reach corner of the Vercors massif, inside the Vercors Regional Nature Park. It was precisely this isolation that made the site a chosen refuge for wounded fighters in the summer of 1944.

What does a visit include?

Tours run with a guide and begin with visitors making their own candle before heading underground. Carrying this light, the group follows the route taken by the cave's early explorers, and the visit closes with a sound-and-light sequence and a slideshow on the history of the cave's exploration. Inside, the temperature stays low and constant year-round, so warm jackets are handed out free of charge before entry.

How large is the cave system?

Grotte de la Luire has around 57 kilometres of surveyed passages, placing it among the seven largest cave networks in France and the largest in the Drôme department. It also holds a Vauclusian-type resurgence reaching a depth of roughly 483 metres, recorded as the largest measured spring of this kind in the world.

What happened here in 1944?

On 8 June 1944, Resistance fighters set up a field hospital for wounded maquisards of the Vercors under the direction of Dr Ganimède, in nearby Saint-Martin-en-Vercors. As the German threat closed in, the order came on 22 July 1944 to move the hospital toward the town of Die. Since Die was already under German occupation, the wounded and medical staff were sheltered instead deep inside Grotte de la Luire.

On 27 July 1944, a German unit sweeping the Vercors massif reached the cave and forced its way inside, where around fifty wounded men and caregivers were present. Seventeen of the severely wounded were shot dead on the spot. Two doctors and the hospital's chaplain, Father Yves de Montcheuil, were taken to Grenoble and executed there in the following days. Seven nurses, among them Rosine Crémieux, were deported to the Ravensbrück concentration camp. In total, between 29 and 30 people died as a result of the raid and its aftermath. The episode became one of the starkest symbols of the brutality of German reprisals in the Vercors.

Frequently asked questions

Can the cave only be visited with a guide? Yes, visits are guided group tours that begin with making your own candle.

How long does the tour last? The visit takes about an hour.

Is it cold inside the cave? The cave keeps a low, constant temperature, so a warm jacket is provided before you go in.

Are the 1944 events part of the visit? The cave entrance, which served as a Resistance field hospital in July 1944, forms part of the site's story alongside its natural and geological features.

Who is this site suited for? Grotte de la Luire draws both cave and nature enthusiasts and visitors interested in the history of the Resistance and the Second World War in the Vercors.