Reconstruction of the Karakoram Highway the China-Pakistan Friendship Tunnels can be traced to 2013, when China began construction on a bypass of Attabad Lake with a combination of 5 km worth of tunnels, two large bridges, and 78 small bridges to bypass the lake which had been formed after a 2010 earthquake triggered massive landslides. The resulting landslides cut off both the Indus River and Karakoram Highway resulting in the formation of the reservoir. Prior to completion of the bypass, all vehicular traffic had to be loaded onto barges to traverse the new reservoir. Construction of the tunnels began in 2012 and required 36 months
Karakoram Highway route comprises five tunnels and several bridges. The longest tunnel is , followed by , , and , while the Shishkat Great Bridge on Hunza River is long. The realignment restored the road link between Pakistan and China. The Chinese section of the Karakoram Highway follows the north-south Sarykol ("Yellow Lake") valley just west of the Tarim Basin. The road from Kashgar goes southwest about and then turns west to enter the Gez (Ghez) River canyon between Chakragil mountain on the north and Kongur mountain on the south. From the Gez canyon the population becomes Kirgiz. Having climbed up to