Spin Ghar (Pashto: سپين غر, lit. "white mountain") or Safed Kuh (Persian: سفید کوه, lit. "white mountain") or (as late as the 19th century AD) the Indian Caucasus, also known as the Safīd Mountain Range or Morga Range,[1] is a mountain range on the Pakistan-Afghanistan border, up to 4,761 m (15,620 ft) above sea-level at Mount Sikaram, straight and rigid, towering above all surrounding hills. Except for a narrow trough cut by the Kābul River, which breaks through the mountains to flow eastward into the Indus River, the range connects directly with the Shandūr offshoot of the Hindu Kush mountain system.[1]
A spur of the range is crossed by the Khyber Pass. The lower slopes are nearly barren; pine and deodar formerly grew on the main range, but devastation during the Afghan civil war reduced timber resources. The valleys support some agriculture.