The nature reserve Povydří (Vydra Valley) is the protected area along the Vydra river between the settlement Antýgl and the small village Čeňkova Pila. A nature trail was founded here. It is 7 km long with 12 informative notices and it leads along the stony bed of the Vydra through the untouched and attractive valley.

In this part of the river there are big stones in the bed, which forms rapids here. Interesting rock formations and massifs with seas of stones and logan-stones can be seen on the sides of the valley.
The 14 km long Vchynicko-Tetovský Kanál (Vchynice-Tetov Canal) is the technical site of this region. It was built for floating timber and connects the Vydra and Křemelná rivers.

Starting points of the nature trail are Čeňkova Pila and Antýgl. The forest path leads from the village Srní to the Vydra river and to the reserve as well.