Cao Bang province is located in the Northern part of Vietnam, sharing the border of 322 kilometers with Guangxi province of the People’s Republic of China. The main town is also named Cao Bang and was a colonial military town and is where the Viet Minh rebels won their first victory against the French army. From Cao Bang town, visitors can trek through stunning scenery to villages of minority ethnic people.  Don’t miss Ban Gioc Waterfall, about a three-hour drive from Cao Bang town. This beautiful waterfall, which spans 300 meters and has a 53 meter vertical drop, is the largest waterfall in Vietnam, and straddles the Vietnam-China border. Nearby is Nguom Ngao Cave, also not to be missed with its awe-inspiring caverns filled with stalactites and stalagmites.