The Guadarrama Pass, also known as Alto del León, is a mountain pass in Spain. It is located in the Sierra de Guadarrama, part of the Sistema Central system of ranges.
Historically it has been an important communication line between Madrid and the North of Spain.
Wikipedia https://en.wikipedia.org/wiki/Guadarrama_Pass
Address Carretera de la Coruña, 28440, Spain
Coordinates 40°42'36.411" N -4°8'24.715" E