The Spīn Ghar (Pashto: سپین غر) or Safēd Kōh (Dari: سفیدکوه, less used in this area; both meaning "White Mountain"), or sometimes Selseleh-ye Safīd Kūh (from Pashto, meaning "White Mountain range"), is a mountain range to the south of the Hindu Kush. It ranges from eastern Afghanistan into Khyber Pakhtunkhwa, Pakistan, and forms a natural border between the two countries. Its highest peak is Mount Sikaram on the Afghanistan–Pakistan border, which towers above all surrounding hills to 4,755 m (15,600 ft) above mean sea level. The lower hills are mostly barren and treeless, but pine grows on the main mountains that form the East Afghan montane conifer forests.