Fontaine de Vaucluse Font de l'Oule .lauzas nord

The Fontaine de Vaucluse is a karst spring in the commune of Fontaine-de-Vaucluse, Vaucluse department.It is the largest karst spring in metropolitan France by flow, and fifth largest in the world, with annual output of 630,000,000 to 700,000,000 cubic metres (2.2×1010 to 2.5×1010 cu ft) of water. The spring is the prime example in hydrogeology of a "Vaucluse spring".