The village of Bourré, set into the tuffeau cliffs along the Cher River in the Loir-et-Cher département of Centre-Val de Loire, contains one of the most extensive networks of man-made underground tunnels in the region. The Champignonnières (mushroom-growing galleries) of Les Caves des Roches extend for approximately 2 kilometres beneath the hill above the village, carved by tuffeau quarrymen from the medieval period onward to supply building stone for the Loire Valley châteaux. When quarrying ended, the galleries were converted to mushroom farms exploiting the constant 12 °C temperature and high humidity, and they remain active today alongside a guided tourist circuit combining cave geology, troglodyte history, and a working champignon de Paris mushroom cultivation demonstration. Les Caves des Roches, located on the Route de Vierzon, operates guided group tours lasting 1 to 1.5 hours. Admission is €8–€12 for adults and €5–€8 for children, making this one of the most affordable underground experiences in the Loire Valley. Tours depart on a fixed daily schedule from April through November; English-language commentary sheets are available at the entrance. The cave temperature is a constant 12 °C year-round, making a warm mid-layer essential regardless of outside conditions — even in August, a light fleece or jacket is required. The tour route is accessible to a wide range of visitors. Tunnel ceiling height is approximately 1.8 metres for most of the route, with some low sections requiring ducking. The floor is compact gravel and slightly uneven in places; closed-toe shoes with a grip sole are strongly recommended. The main route is wheelchair accessible for approximately 600 metres before sections with steps. Tour highlights include a room-sized display of the full mushroom lifecycle from spore to harvest, corridors lined with cream-and-grey tuffeau blocks still showing quarrymen's tool marks, and a cellar section where local wines and foie gras are aged in the stable cave conditions. A small farm shop at the exit sells fresh champignons de Paris grown on-site and local Cher Valley wines.
Activity facts
- Where
- Bourré, Loir-et-Cher
- Duration
- 1–1.5 hours guided tour
Equipment
- Warm layer required (cave is 12°C)
- Closed-toe shoes
Location
Les Caves des Roches, Route de Vierzon, 41400 Bourré, France
47.3270, 1.1830 View on map
Highlights
- 2 km of active mushroom-cultivation galleries in medieval tuffeau quarry tunnels beneath the village of Bourré
- Constant 12 °C cave temperature year-round — the same stable conditions used for Loire Valley wine and cheese ageing
- Working champignon de Paris demonstration showing the full mushroom lifecycle from spore injection to harvest
- Quarrymen's tool marks still visible on the tuffeau walls — the same stone used to build Château de Chambord and Amboise
- Affordable guided tours at €8–€12 for adults; main route accessible for most mobility levels for the first 600 m
Tips for visiting
- Wear or bring a fleece or light jacket regardless of season — the cave stays at 12 °C year-round and feels cold within 10 minutes.
- Wear closed-toe shoes with a grip sole; the compact gravel floor is uneven in places.
- Arrive at least 15 minutes before the scheduled tour departure as groups form quickly in summer.
- Combine the cave visit with a walk through Bourré's surface village to see inhabited troglodyte dwellings carved into the cliff face above ground.
- The guided tour is in French; ask for English-language information sheets at the entrance before the tour begins.
Frequently asked questions
Is the cave suitable for visitors with claustrophobia?
Some visitors with claustrophobia may find the lower tunnel sections challenging, particularly where the ceiling drops to approximately 1.6 metres. The main gallery is spacious and well-lit, but the tour passes through narrow connecting sections. Visitors with concerns should position themselves near the front of the group.
Is the tour wheelchair accessible?
The main route is wheelchair accessible for approximately the first 600 metres. Subsequent sections involve steps and low ceilings. Contact Les Caves des Roches in advance to confirm which sections of the tour are reachable.
What is the tour language?
Guided tours are conducted in French. English-language information sheets covering the main points of the tour are available at the entrance at no extra cost.
Can visitors buy mushrooms or local products at the site?
Yes. Les Caves des Roches operates a small farm shop at the exit selling fresh champignons de Paris grown on-site, along with local Cher Valley wines and preserved goods aged in the caves.
Is the tour suitable for young children?
Yes. The tour is suitable for children aged 4 and over. The route is well-lit and the mushroom-growing displays are engaging for younger visitors. Low sections require ducking; parents should consider a child's comfort with confined spaces beforehand.