Here's the actual pic of the traffic jam at 4000m that didn't get published with my Crikey article on the gridlock on the Sichuan-Tibet highway near Litang. (I can see why, not very visually appealing with the cloud obscuring the view).
Kham then and now. A photoblog showing how eastern Tibet looked in the 1920s and how the same places and people look now. Based on the explorations of botanist Joseph Rock.