Rivers and streams from the nearby Cantabrian cordillera have made way between those two gorges to continue their course towards the Nela. The route runs between these environments.
- Origin and destination of the route:
- Casa del Parque de Quintanilla del Rebollar
- Route code:
- PRC-BU 40
- On foot (25 h.)
- 11.8 km.
- Ascent slope:
- Difficulty of the route:
Quintanilla del Rebollar (Merindad de Sotoscueva). 09568 Burgos.