We travelled the Diwen Expressway to Barkam. Known as the ‘Tunnel region’, there were 27 tunnels under mountains. Not all tunnels were labelled with their length, but we estimate that there was about 60km of tunnel. Amazing engineering feat! Between the tunnels were bridges over lakes, raging rivers and hydroelectric power generation. 2km bridge between tunnels 5… Continue reading Into Tibet – Barkam