Hang De Cho - The most majestic waterfall in Northwest Vietnam "De Cho Waterfall" is one of the 'four great places' of the Northwest mountains and forests (also one of the most beautiful waterfalls in the Northwest) located in Lang Nhi and Tram Tau communes of Yen Bai province, the border between the two provinces. Yen Bai – Son La. De Cho waterfall is named after the village where it is located, the waterfall leans against Ta Xua forest.