The CNRS field station in Moulis (near Saint Girons, Ariege, France) was founded in 1948 under the guidence of professers Jeannel (Musée National d’Histoire Naturelle, Paris) and Vandel, (Université Paul Sabatier, Toulouse). Its objective was to study physical and biological aspects of underground cave systems. The laboratory was built in Moulis because of its proximity to extensive cave systems. Two caves in particular were converted to accommodate laboratories thus providing the name “underground laboratory in Moulis” to the field station. For many years, research at the laboratory focused on i) the formation and physical properties of karstic systems and ii) systematics and adaptations in hypogeaic organisms like Proteus anguinus.
In 2007, the laboratory began a transition to a more general experimental ecology field station under the direction of Jean Clobert. The name has been changed to the “Experimental Ecology Station of the CNRS at Moulis” to reflect this new mission.