A mystery
finally unveiledFor a very long time, the Fontestorbes fountain remained a real mystery… Classified as a natural site in 1921, its waters cascade from a monumental porch opened in a cliff. The spring flows steadily most of the year, but in periods of low water ,the resurgence exhibits intermittencies that no one could explain.
It wasn’t until 1965 that the cause of this curious phenomenon was demonstrated by Alain Mangin, an engineer at the CNRS in Moulis. He explained these interruptions by the presence of a pipe with an upstream air intake.
