Travel to Cao Bang to explore Ban Gioc waterfall and Ngom Ngao cave. Cao Bang is in the northeast and it is 350km away from Hanoi. Take a 7 hour transfer from Hanoi to Cao Bang city and 3 hours next day to this most beautiful waterfall in Vietnam. The way back, stop to stay and visit Ba Be Lake. Immerse into the nature, beautiful landscapes, culture and local minority groups.