Ra-og Lake, located in Pashod County of Qamdo, southwest China's Tibet Autonomous Region, has an water area of 22 square kilometers. Ra-og Lake, the largest lake in southeast of Tibet, stands at an altitude of 3,850 meters. Photo taken on June 4 shows the summer scenery of Ra-og Lake which is like an oil painting. [Photo/Zhang Rufeng]

Photo taken on June 4 shows the summer scenery of Ra-og Lake. As summer comes, sky-blue lake water is surrounded by green grassland and snow-capped mountains, presenting a picturesque scenery.  [Photo/Zhang Rufeng]

Photo taken on June 4 shows the summer scenery of Ra-og Lake. The sky-blue lake water is tranquil in the arms of snow-capped mountains. [Photo/Zhang Rufeng]