The Khyber Pass (elevation: 1,070 m or 3,510 ft) is a mountain pass connecting Afghanistan and Pakistan, cutting through the northeastern part of the Spin Ghar mountains. An integral part of the ancient Silk Road, it has long had significant cultural, economic, and geopolitical significance.

Since the end of 2008, supply convoys and depots in this western part increasingly came under attack by elements from or supposedly sympathetic to the Pakistani Taliban.

In January 2009, Pakistan sealed off the bridge as part of a military offensive against Taliban guerrillas. This military operation was mainly focused on Jamrud, a district on the Khyber road. The target was to “dynamite or bulldoze homes belonging to men suspected of harboring or supporting Taliban militants or carrying out other illegal activities”. The result meant that more than 70 people were arrested and 45 homes were destroyed. In addition, two children and one woman were killed. As a response, in early February 2009, Taliban insurgents cut off the Khyber Pass temporarily by blowing up a key bridge.

In August 2011, the activity at the Khyber pass was again halted by the Khyber Agency administration due to the more possible attacks of the insurgency over the NATO forces, which had suffered a period of big number of assaults over the trucks heading to supply the NATO and ISAF coalitions all over the frontier line.

More Info: en.m.wikipedia.org