The map above shows the general location of the Sierra de Gredos - roughly 200Km west of the Spanish capital , Madrid (press the + button for more details and the arrows to navigate, e.g. you can find Monfragüe south-west from the Gredos)
The map to the right gives more detail on the location of the village of Navacepeda de Tormes where Gredos Vivo is based, in the Sierra de Gredos.