Peiwar Pass is an international high mountain pass at an elevation of 2.615m (8,579ft) above the sea level, located between Afghanistan and Pakistan.
The road to the pass is asphalted but pretty steep. It’s called Pewar Road. The pass links the Paktia Province of Afghanistan and the Kurram Agency in the Federally Administered Tribal Areas of Pakistan. Peiwar Kotal was the site of a battle in late November 1878 between British and Indian troops against Afghan troops and tribesmen. Snow closes the pass for up to five months per year. If you do choose this route please check up to date information due to the security situation. Obviously you would have to really (!) check what is going on now. You might want to contact your embassy in Kabul as they have really the best info about terrorist attacks, ongoing armed conflict, risk of kidnapping and high crime rate.
Pic&more info: http://spreebird.blogspot.com.es/2013/04/parachinar.html