Enna is a stream that has taken the name of "river milk" for the spectacular way in which it flows from the limestone walls and then jumps to the bottom of the valley.
In the area of the springs the watercourse makes some spectacular jumps originating the famous white foam and filling deep puddles suitable for summer refreshment.
The actual spring can be seen by climbing up a steep path. It can be seen under a huge stone from where it gushes out with great momentum. Following the course you cross woods of beech, hazelnut, alder and hornbeam and meet other tumultuous jumps of the river, followed by stretches where it flows more quietly.