The valley contains the remains of a village once dedicated to the charcoal industry, which ceased operations in the mid-20th century.
It hosts one of the largest colonies of cinereous vultures (Aegypius monachus) in Europe.
The Burguillo Reservoir was one of the first in Spain to be constructed specifically for hydroelectric power generation.
The reserve protects the 'Castañar de El Tiemblo', a forest famous for its ancient, large-girthed sweet chestnut trees.
The area is a transition zone between the Mediterranean and Atlantic climatic regions.
Valle de Iruelas is a protected Natural Reserve located on the northern shore of the Burguillo Reservoir in the Sierra de Gredos. The area features a significant colony of griffon vultures and is designated as a Special Protection Area for birds. Its landscape consists primarily of dense Pyrenean oak, holm oak, and maritime pine forests. The Las Cruceras visitor center serves as the main information hub for hiking trails and local ecology. The reservoir itself is utilized for various water-based activities and recreational fishing. Elevation varies considerably, influencing the microclimates found within the valley. The reserve is managed under the jurisdiction of the Castile and León autonomous government.
The viewpoint overlooking the Burguillo Reservoir near the Las Cruceras visitor center.
Check for fire hazard alerts before visiting, as access to certain forest tracks may be restricted during peak summer months.
Bring binoculars to observe the nesting colonies of vultures found on the crags above the reservoir.
Wear sturdy footwear suitable for rocky mountain trails rather than standard walking shoes.
Attempting to drive personal vehicles onto restricted forest tracks that require prior authorization.
The visitor center may have reduced staffing during winter weekdays; trails remain accessible year-round unless closed by environmental authorities due to weather or fire risk.
Strictly follow 'leave no trace' principles; do not disturb nesting birds or collect plant specimens.
