The Source of the River Sorgue is located in a cave in the town of Fontaine de Vaucluse. The cave is so deep that Jacque Cousteau was never able to find the bottom. An algea grows in the water of the Sorgue that makes it very beautiful. This year was the first time we saw swimmers take the falls with these little half boats. Looks like a real rush. May give it a try next trip.