The path starts from the Mount Arcosu nature reserve info (admission fee 5 euros, not so cheap), it's a 3,5 km ring path with 100 meter uphill differece in height. The right path is marked by.
On the path there are a few, made with all the traps fund inside the trail. On the first section, the path , then it rises on the rock and is possible to look at in the nature reserve.
Most of the path is, we point out many and trees. We are now close to the : go left and you'll pass a fence with and then you'll come back at the info point.
This was a very easy path. 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.wwf.it/oasi/sardegna/monte_arcosu/ (Italian Language)