Nguom Ngao Cave is a cave located in the Gun, Dam Thuy commune, Trùng Khánh  District, Cao Bang Province, Vietnam. This cave was discovered in 1921. This cave is located in the heart of a mountain, 5 km from Ban Gioc Falls. According to a survey by the Royal Association of British cave in 1995, this cave has a total length of 2144 meters, has three main gates: Nguom Ngao, Lom and Ban Nguom streamlined. In the many stalactites and stalagmites with the shape diversity. "Nguom Ngao" in the Tay lang