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
Tourism in Pakistan a large number of trucks and lorries importing and exporting goods in and out of the region. The Babusar Pass is another mountain pass connecting the Thak Nala with Chilas on the Karakorum Highway. The Lowari Pass is another pass which connects Chitral with Dir via the Lowari Tunnel. The highest mountain pass in Pakistan is Shandur Pass which connects Chitral to Gilgit and is known as the "Roof of the World". The pass is the centre of three mountain ranges – Hindukush, Pamir and Karakoram. Punjab is the second largest province in Pakistan. It is known for its ancient