The East Afghan montane conifer forests ecoregion (WWF ID: PA0506) covers a series of unconnected conifer forests along the border between Afghanistan and Pakistan, at elevations of 2,000 metres (6,600 ft) to 3,400 metres (11,200 ft) above sea level. The ecoregion supports the near-threatened Markhor (Capra falconeri chiltanensis), known as the Screw-horned goat, the national animal of Pakistan. The forests of the ecoregion have been heavily thinned for timber.
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.