The Val di Merse is a hilly and wooded of great natural beauty that borders on the Maremma.
The route that you can do, starting from the farm La Selva follows the sea route leading to Follonica, the highlights for sure tourist interest are:
After passing the village of Rosia on the left you can reach the ancient village of Brenna, where after parking the car, you can take a nice walk in the woods following the path that leads to the beautiful waterfalls of the river Merse, where you can do quietly swimming.
Returning to Rosia and continue the way to the Sea in Follonica, you will see on the left the "Bridge of the Pious" a bridge in 1300 named Pia de Tomomei, as when he went in Maremma crossed it.
Column Montarrenti immediately after the eponymous castle, turn left for Frosini Frosini after you will see signs for Chiusdino, important medieval center where the Church is consevato the body of San Galgano, Knight Templar, who encountering Jesus gave up all forms of violence and thrust his sword into the rock and founded a community, in San Galgano which is located a few kilometers from Chiudino, you can see the famous Cistercian Abazzia homeless dedicated to San Galgano, while in the chapel of Montesiepi you can see the sword embedded in the rock.
Of Montesiepi there are many legends related to the Holy Grail
Continuing in the direction Follonica you get to Massa Marittima in Maremma, an important medieval center that is worth a visit.
Finally a few kilometers there Follonica where you can take a well deserved swim in a clean sea.