Description also available in Italian
Once you reach the starting point, follow the signals for the path: "Sentiero Natura", "SN2", "Sentiero Natura Su Bacino" and also the signs with the duck inside. You'll find a huge eucalyptus and then a mysterius signal indicating outside the track (check the POIs).
We walked a while around the signal before we found the trail again, but then we realized we were walking the ring in the wrong direction. The most interesting features of the trail are a nice waterfall on white rocks and the dark, impressive wood.
At the end of the ring we reached the starting point, but we were rather disappointed both by the neglected structure and the wrong signal, that was probably twisted by some stupid guy.
This was a very easy path, just 1,5 km long and a 50 meters difference in altitude. Inside the park there are many challenging trails, remember that there is no drinkable water nor mobile phones field before you decide to walk over them.
Find more info at http://www.ilcaprifoglio.it/camminaoasi.html (Italian Language)