Just 20 kilometres northeast of Granada city, the Sierra de Huétor Natural Park is a favourite weekend destination for the population of the city. At heights ranging from 1000 to 2000 metres, this limestone massif with the breathtaking features common to limestone areas, deep ravines, cliffs, caves, springs and fantastical karstic formations, with its crisp, clean air, is a sharp contrast to the city itself that is often covered by a haze of atmospheric pollution.