In order not to backtrack from the beautiful Embalse del Molino de Chincha to Puente de Vadillos, on the route to Beteta, you have to cross the nature reserve above the Chincha dam. The steep climb along the Barranco del Hoyo follows a faint single track path, barely visible due to a small landslide at the beginning of the climb. This is a tough hike-a-bike where you have to carry your bike over some steep rocky sections. Only try this at day time in good weather. At night or in wet weather this can be quite dangerous.