Two visitors watch the wonder of geothermal seracs at the foot of Mt. Nyainqentanglha, 150 km from Lhasa, capital of southwest China's Tibet, on April 20, 2009. There, a spewing geothermal fountain has been frozen throughout winter, forming a marvellous view of geothermal seracs. Many tourists are attracted to visit it. [Xinhua/ Chogo]