Tora Bora is a cave complex, part of the Spin Ghar mountain range of eastern Afghanistan. It is situated in the Pachir Aw Agam District of Nangarhar, approximately 50 kilometres west of the Khyber Pass and 10 km (6 mi) north of the border of the Khyber Pakhtunkhwa province in Pakistan. Tora Bora and the surrounding Spin Ghar range had natural caverns formed by streams eating into the limestone, that had later been expanded into a CIA-financed complex built for the Afghan mujahideen. Tora Bora was known to be a stronghold location of the Afghan mujahideen, used by military forces against the Soviet Union during the 1980s.

The Spīn Ghar or Safēd Kōh meaning both White Mountains, or sometimes 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 areas. 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.