Valle de Iruelas Natural Reserve

The Valle de Iruelas Natural Reserve is a large protected area in the province of Ávila, spreading along the right bank of the Alberche River at the foot of the Sierra de Gredos. Covering more than 8,600 hectares, it stretches across the municipalities of El Barraco, El Tiemblo, Navaluenga and San Juan de la Nava. It ranks among the most important protected spaces in Castilla y León, valued by naturalists and hikers alike.

Where is it and how to get there?

The reserve lies in the southeastern part of Ávila province, within the Sistema Central mountain range, an eastern spur of the Sierra de Gredos. The easiest approach is via the N-403 road connecting Ávila and Toledo. From the town of El Barraco, it's about 11 km further along a turn-off toward the valley, passing the bridge over the El Burguillo reservoir. The visitor center, Casa del Parque, sits roughly 3 km beyond that, near the settlement of Poblado de las Cruceras.

What can you see in the valley?

The reserve's biggest draw is its bird of prey population, above all the black vulture: Valle de Iruelas holds one of the largest breeding colonies of this species in Castilla y León, with around 120 pairs. Because of this concentration of raptors, the area has been designated a Special Protection Area for Birds (ZEPA) under the EU's Natura 2000 network. Alongside the vultures, visitors may spot golden eagles, short-toed eagles, booted eagles, buzzards, kestrels, black and red kites, and hobbies. The landscape itself is shaped by rocky slopes covered in cork oaks and pines, cut through by streams that feed into the Alberche River.

Planning a visit

Staff at the Casa del Parque visitor center provide information about the reserve and help visitors plan a route. Guided tours can be booked in advance by phone or email through the center. It's a sensible first stop before heading into the valley, since staff can point out which trails and lookout points currently offer the best chances of watching raptors in flight.

Beyond the birdlife

The wider area also attracts visitors looking for outdoor activities: local operators run adventure sports such as climbing, kayaking and trekking, making use of the valley's terrain and the nearby El Burguillo reservoir. The reserve sits close to other attractions in the Sierra de Gredos region, making it easy to combine a visit here with a longer stay in the area.

Frequently asked questions

How long does a visit to Valle de Iruelas take? It depends on the route. A short walk around the Casa del Parque area takes an hour or two, while a fuller exploration of the valley with bird-watching can easily fill a whole day.

Do you need a guide? It's not required, but guided tours make it easier to find the best vantage points for spotting vultures and other raptors — booking ahead through the visitor center is recommended.

What's the best time of year to visit? Spring and autumn offer milder temperatures and good conditions for birdwatching, though the reserve is open to visitors year-round.

Is accommodation available nearby? Yes, nearby towns including El Barraco and El Tiemblo offer casas rurales and other lodging options for those visiting the valley.