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Explore the Iruelas Valley Nature Reserve, a corner in the Sierra de Gredos. Discover mountain streams, the Iruelas stream being the main tributary of the Alberche River. Observe the largest colony of black vultures in Castile and León, with around 120 pairs. Explore the Natural Reserve from Cerro de la Escusa to the El Burguillo reservoir.

Visit the old town of Las Cruceras, now rural tourism, and the Casa del Parque, previously inhabited by resin workers and loggers. Admire the variety of vegetation, from junipers to pine and oak forests. Discover the chestnut grove of El Tiemblo, a magical touch in the landscape. Learn about the geological history of granite and metamorphic rocks.

Enjoy diverse wildlife, from imperial eagle to deer and wild boar. Spot threatened species such as the dipper and black-green lizard.

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Enviromental Areas

wildlife
Important colony of black vultures and other birds of prey.
Relief
Mid-mountain landscape located in the foothills of the Sierra de Gredos.
Vegetation
Pine with patches of Pinus nigra (pino laricio), and Quercus pyrenaica (rebollo).

Get to know this natural space

House of the Natural reserve of the Valle de Iruelas

Visitors can obtain general information about the Reserve to help them plan their day. Temporary exhibitions provide details of various aspects about the area, water, flowering and breeding periods, the soil, forests and history of the valley. There is...

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Enjoy this natural space

On foot and by bike

  • A10 A10 - San Gregorio Path

    Located in the Iruelas Valley Nature Reserve. We begin the route at km 3 of the forest track that leads from El Tiemblo to El Castañar....

    Journey
    Linear
    Way
    • On foot
    Length
    4.6 kms.
    Ascent slope
    229 m.
    Difficulty of the route
    Medium-Low
    To know more
  • A9 A9 - Botanical Path

    Located in the Iruelas Valley Nature Reserve. The botanical trail of the Iruelas Valley Nature Reserve allows you to discover some...

    Journey
    Linear
    Way
    • On foot
    Length
    0.6 kms.
    Ascent slope
    10 m.
    Difficulty of the route
    Low
    To know more
  • PR-AV 21 Barrancas to Pozo de la Nieve Route

    The route ends at the old building of Pozo de la Nieve, which is a typical hill refrigerator, which you can visit.

    Journey
    Linear
    Way
    • On foot (1.15 h.)
    Length
    2.5 kms.
    Recommended
    • spring
    • autumn
    Difficulty of the route
    Medium
    To know more
  • Botanic Pathway

    The route has some of the most representative species of the reserve such as holly, yew trees, chestnuts, pines and hawthorns.

    Journey
    Linear
    Way
    • On foot (0.3 h.)
    Length
    0.6 kms.
    Ascent slope
    10 m.
    Recommended
    • spring
    • summer
    • autumn
    Difficulty of the route
    Low
    To know more
  • PRC-AV 53 Cerro de las Viboras

    The route allows enjoying the beautiful panoramic views of the valley of Iruelas and of Burguillo reservoir. From the observatory...

    Journey
    Circular
    Way
    • On foot (1.15 h.)
    Length
    3.6 kms.
    Ascent slope
    200 m.
    Difficulty of the route
    Low
    To know more
  • GR-10 Journey of the Sierra de Gredos, from Las Cruceras to Burgohondo

    This is a stage of great landscape beauty, due to the abrupt terrain and the vegetation on the slopes of pine trees and rockroses.

    Journey
    Journey
    Way
    • On foot (5.3 h.)
    Length
    21.8 kms.
    Ascent slope
    92 m.
    Difficulty of the route
    Medium
    To know more
  • PRC-AV 54 The Chestnut Grove of El Tiemblo

    The path starts and ends in an old stone lodge and part towards the centenary chestnut ‘El abuelo’. This is an easy path to go with...

    Journey
    Circular
    Way
    • On foot (2 h.)
    • By bike (2 h.)
    Length
    4.4 kms.
    Ascent slope
    114 m.
    Difficulty of the route
    Low
    To know more
  • PR-AV 52 Way of San Gregorio

    The route is an old highway which linked the villages of El Tiemblo and Casillas.

    Journey
    Linear
    Way
    • On foot (3 h.)
    • By bike (3 h.)
    Length
    4.6 kms.
    Ascent slope
    229 m.
    Difficulty of the route
    Medium-Low
    To know more

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