Honghe Hani & Yi Autonomous Prefecture, founded on Novermber 18th,1957 consists of the original Mengzi prefecture, honghe Hani & Yi Prefecture and Gejiu, a city under provincial jurisdiction. It was named after the Honghe river which flows across its cities and counties. The Honghe Hani and Yi Nationalities Autonomous Prefecture is a multicultural and ethnically diverse region principally inhabited by Hani and Yi nationalities. The Honghe prefecture has a varied and rugged terrain with mountain ridges and valleys in the South and hills and vast forests in the North. The prefecture also has plentiful natural resources, dazzling local scenery and colorful costumes worn by the ethnic nationalities. The most popular scenic spots are in Jianshui County, Luxi County (the ancient A'lu Cave) and Hekou (which borders Viet Nam).