Transhumance is the practice of moving herds seasonally over long distances, between mountainous summer pastures and lowland winter pastures. It was practiced during the Middle Ages in most parts of Europe which had non-arable hilly areas, from Norway to Spain. One of the most well-known examples of this are the Spanish sheepwalks, ranging from the Cantabrian mountains in the north down to the Andalusian valley in the south. In Italy, on a limited scale, these migrations lasted until the 1960s (now they move the livestock in trucks), and it is still done by dairy farmers in Switzerland.