Ma Pi Leng Peak in three communes Pai Lung, and Xin Cai Pa Vi (Meo Vac, Ha Giang) in Dong Van stone plateau with an altitude of about 2000m above sea level, is created by a series of sedimentary limestone, light slate , siliceous limestone containing fossils about 426 million years ago , which included many slide marks and cracks due to orogenic activity caused. The landscape is rocky areas up , in which the Nho Que river deep as sawn sometimes one side is Ma Pi Leng top and one side tubes Pun (Pun Sam), where the border posts and border trade from Bong Dien Cai Xin to China. The French scholar , from a hundred years ago , was called Ma Pi Leng particular peak and Global Geopark Dong Van Plateau is generally a " Geological Monument." Go on Ma Pi Leng pass looking down the abyss, Nho Que river just as a thread that she wanted to water down the river takes more than a day.