The Cloup d’Aural Phosphate Mines
The Cloup d’Aural Phosphate Mines offer an immersive experience in a world where history, science and nature come together.
We strongly encourage you to explore this unique place, which bears witness to the evolution of our planet and humanity’s exploitation of its resources.
A chance discovery
The history of the phosphate mines began in 1865When Jean-André Poumarède, a pharmacist and chemist in Caussade, visited his brother-in-law in the area.
Intrigued by the lushness of the local crops and the presence of bone debris in the fields, he took samples of these curious stones. His analyses revealed a high tricalcium phosphate, which is essential for agriculture.
This discovery marked the start of phosphate mining in the Quercy region.
The golden age of mining
By the end of the 19th century, phosphate mining was in full swing. Phosphate pits – whether natural or man-made – became major mining sites.
Workers extract the precious ore, which is used as fertiliser to enrich agricultural soils. This industry is transforming the landscape and the local economy, making the Lot a key player in phosphate production in France.
The Cloup d’Aural phosphate mines: a palaeontological treasure trove
Over and above their industrial importance, phosphate mines are proving to be real treasures for palaeontologists.
The sediments accumulated over thousands of years have preserved a multitude of fossils., providing a unique insight into the fauna of the Tertiary period, some 34 million years ago.
More than 700 fossil species have been identifiedsome of which have become international references for defining European faunas.
What lush vegetation!
As you descend into the phosphatières, you'll be surprised by a lush vegetation that will remind you of the tropics. But you're still in the Quercy!
Giant ferns, orchids and other exotic plants thrive in this unique microclimate, favoured by the geological configuration of the site.
A tourist and educational site
Today, the Cloup d’Aural phosphate mines have been developed to welcome visitors. Guided tours offer visitors the chance to discover the site’s geological, industrial and natural history.
We personally really enjoyed the visit.
The site is also a centre for scientific research, where excavations continue to uncover new fossils, helping to improve our understanding of the evolution of species and climates.
In addition, an interpretation centre is currently being built on the site.
Visit the The Cloup d’Aural Phosphate Mines for information on times, prices and bookings.