In the spring (the moulting season), the goats naturally shed their undercoat, which regrows in winter. This undercoat is collected by combing the goat, not by shearing, as in other fine wools. A traditional producer of pashmina wool in the Ladakh region of the Himalayas are a people known as the Changpa. These are a nomadic people and inhabit the Changthang plateau of Tibet, which has a lowest altitude of 13,500 feet above sea level and a winter temperature which can drop to −40-degree Celsius. The Changpa rear sheep in these harsh climates for meat, and pashmina goats for wool.