Sierra de Guadarrama near Madrid, Spain – June 20th, 200940.4N 3.7W
The Sierra de Guadarrama is a mountain range forming the eastern half of the Sistema Central (a mountain range in the centre of the Iberian Peninsula). It is located between the Sierra de Gredos in the province of Ávila, and Sierra de Ayllón in the province of Guadalajara.
The range runs southwest to northeast, extending into the province of Madrid to the south, and towards the provinces of Ávila and Segovia to the north. The chain as a whole measures approximately 80 km in length, with its highest peak, Peñalara, reaching 2,428 m above sea level (7,965 ft).
The peaks of the Sierra de Guadarrama can be observed free of geometric distortion as the image has been orthorectified.
The mountain range’s proximity to Madrid (the large, bright white area south of the peaks) means it can become rather crowded. The area is crossed by numerous passes and railway routes and sustains a highly developed tourism infrastructure; these pose a threat to the fragile environment of the mountains.