Detian - Banyue Falls (Chinese: 德天瀑布 & 板約瀑布) or Ban Gioc Falls (Vietnamese: thác Bản Giốc), are 2 waterfalls on the Quy Xuan River straddling the Sino-Vietnamese border, located in in the Karst hills of Daxing County in the Chongzuo prefecture of Guangxi Province, on the Chinese side, and in the district of Trung Khanh, Cao Bằng province on the Vietnamese side, 272 km north of Hanoi.
