The photo taken on June 23, 2006 shows an aerial view of mountains and lakes in Shannan Prefecture of southwest China's Tibet Autonomous Region. Tibet Autonomous Region, with the average altitude above 4,000 meters, will be linked with the rest of China by Qinghai-Tibet railway which set to launch its maiden run on July 1. Qinghai-Tibet Railway is the highest and longest highland railroad in the world. [Xinhua Photo]

The photo taken on June 23, 2006 shows an aerial view of snow-covered mountains in southwest China's Tibet Autonomous Region. [Xinhua Photo]

The photo taken on June 23, 2006 shows an aerial view of mountains and Yarlung Zangbo River in southwest China's Tibet Autonomous Region. [Xinhua Photo]

The photo taken on June 23, 2006 shows an aerial view of farmland along the valley in southwest China's Tibet Autonomous Region. [Xinhua Photo]