Toques is the Galician municipality with the most land in the Natura 2000 Network. A trail network which covers a large part of this valuable natural area has been created. PR-G 166 connects with PR-G 167 and PR-G 168, making it possible to combine the routes.

The trail runs parallel to the Furelos River, heading north towards the Serra do Careón mountains. In the first section, you will enjoy flat terrain, walking under the dense shade of chestnut trees to Paradela and Eirixe. Along this leg, there is a variation that splits off from the main route and runs through rougher terrain between Buxán and Paradela. At A Fervenza Mill, you can take in the beautiful sight of the 20-metre waterfall and old mill.

After the waterfall, the terrain becomes mountainous as the trail goes through the Serra do Careón mountains, with views of the Furelos River valley.

This natural area is unique for its flora, with plants that are virtually extinct at the national level and others which are endemic to the region.

After reaching the village of Prados, the trail descends to the Furelos River, bringing the route back on itself and connecting with the outbound leg.

Hikers can be picked up in Eirixe or return to the starting point via variation PR-G 166.1.