The route runs along the right bank of the Ulla river. To get to the start of the trail, there are two options. The first is to walk two kilometres along a path that descends from Subres in the parish of Santiso de Cornado. Another option is to follow the PR-G 121 from Ponte Basebe for one kilometre.
 
The route goes along tracks, roads and paths for forest and agricultural use. It passes through the Fervenza de Rosende, through humid Atlantic and Mediterranean cork oak forests and through areas with mills and new reservoirs in the Ulla. It also reaches Os Chaos, a place in the parish of Santa Mariña de Circes where you will find the well-known petroglyph of Pena Furada.
 
Before ending next to the Os Agra mill, you should take a deviation located under the 30-meter-high waterfall of the Saímes River, known by the names of Fervenza de Santa Marta or Fervenza das Hortas.