Connecting Tibet power grid is a mountainous task

Workers inspect a power line in Haixi prefecture, Northwest China's Qinghai province, July 24, 2011. A 400-kv high voltage direct line will connect Golmud, Qinghai province with Lhasa, Tibet through a wire that runs at an average elevation of 4,000 meters to bring power to an isolated electricity network in the Tibet autonomous region, ending their power shortage. [Photo/Xinhua] 

A worker inspects a power line in Haixi prefecture, Northwest China's Qinghai province, July 24, 2011.[Photo/Xinhua]