lang=EN-US style="FONT-SIZE: 14pt; mso-font-kerning: 0pt">Huanglong, a world natural heritage, lies in the Songpan County of Sichuan Province, and is famous for the beautiful natural landscape, especially the giant travertine. This area belongs to Minshan Mountain which is a structural active province in the Himalayan period. Since Pleistocene epoch, continuously uprising has made this area become a modern high mountain region, where mountain glacier is widespread. Modern glaciation during the Holocene created conspicuous glacial landscape and left abundant glacial deposition. The underground karst water rose up to the ground through the fault and flow along the river channel, forming various travertine landforms of travertine pool, travertine beach, travertine waterfall and travertine cave. These beautiful landforms are still varying at present.