23/01/2016
Tu Lan cave is located along the Rao Nan river where belongs to Phong Nha Ke Bang area, Quang Binh Province, Viet Nam. Tu lan was discovered in the years of 2009, 2012. In the another hand, there are some fantastic caves were formed here. Here has 4 small valleys those are Laken, Hung Ton, To Mo...