The caves were formed by the extraction of tuffeau stone, a porous limestone used to build many of the Loire Valley chateaux.
The underground galleries maintain a naturally constant temperature of approximately 13 degrees Celsius year-round.
It is the only site in France that cultivates the 'pied bleu' or blue-stalk mushroom commercially within a troglodytic setting.
The location overlooks the confluence of the Loire and Vienne rivers.
Tuffeau stone, while soft enough to carve, hardens upon exposure to air, allowing for the creation of stable underground vaulted structures.
The site hosts a specific mushroom variety historically known as the 'button' or Paris mushroom, despite its origin in these regional caves.
The subterranean tunnels extend several hundred meters into the cliffside.
La Champignonniere du Saut Aux Loups is a troglodytic site carved into the tuffeau stone cliffs along the Loire Valley. It functions as both a heritage museum and a working mushroom farm specializing in the cultivation of oyster, shiitake, and Paris mushrooms. The site utilizes the natural underground environment, characterized by constant temperature and humidity, to optimize fungal growth. Visitors traverse excavated subterranean galleries that were historically used for stone extraction before being repurposed for agriculture. The facility offers insight into traditional regional agricultural techniques and the geological properties of the local limestone. It remains one of the few places in France where active mushroom production can be observed in a historic cave network.
The dramatic entrance of the carved cliffside with the river backdrop or the rows of mushroom beds illuminated within the tunnels.
Bring a light jacket as the underground temperature remains cool even on hot summer days.
Wear closed-toe, comfortable walking shoes with good grip, as the cave floors can be slightly damp or uneven.
Check the shop on-site to purchase fresh, locally grown mushrooms or related regional gourmet products.
Avoid rushing through the galleries; the educational value lies in observing the specific cave conditions that support the cultivation process.
Closed for part of the winter season; check ahead for late-year availability.
Do not touch the mushroom cultures or interfere with the growing medium in the production areas.
