Start somewhere past Santa Marina on the road to the campsite (follow the campsite signs and find somewhere to park; do not drive all the way to the campsite)
There are two options for the start (and finish): the path following the Rio El Arenal westwards is very damp, even after a dry spell; the path heading south is more passable (farm track).
The route follows a farm track used by shepherds, so it is easy to find your way.
(1) You’ll cross the path coming from the village of Prada, which you should leave to your right.
A gradual ascent, generally in the shade and offering superb views.
(2) First shepherd’s shelter at Pradolargo.
Continue along the path.
(3) You’ll reach the end of the path at the Monto shelter in the pastures.
Return via the same route.