(280 km from Hanoi) Cao Bang Province is located in the far north-east, 280 km north of Hanoi; it shares borders with China on the north and east. The cool weather is ideal for relaxing and discovery nearby places. Famous sites include Thang Hen Mountainous Lake in Tra Linh, Ban Gioc Fall and Nguom Ngao Cave in Trung Khanh. Among of them, Ban Gioc Fall probably is one of most beautiful waterfalls in Vietnam. Historical sites where Uncle Ho lived and worked before the August 1945 Revolution include Pac Bo, Coc Bo Cave, Lenin Stream, and Khuoi Nam Stream. In Cao Bang, the traditional festivals have specific characteristics of ethnic groups, for example, Long Tong Festival, Inviting–the-Moon-Mother Festival (Moi Me Trang).