Laguna de los Pájaros is a beautiful glacial lagoon located on the northeast slope of Peñalara Peak, in the Sierra de Guadarrama, within the Sierra de Guadarrama National Park. It is located at an altitude of 2,170 meters above sea level, making it the highest lagoon in the park. During the winter, the lagoon remains frozen, and in summer, although its level fluctuates, it does not disappear completely. It is a popular place for hiking, with routes that offer spectacular views of the surrounding alpine landscape.
I recommend going well prepared and in good shape. The part going up to Peñalara and the lagoons has no complications, but the area of the ridge of the carnations and the ridge of the birds is more complex and requires experience.