Located deep in the mountains of Tan Hoa, Minh Hoa, Quang Binh, Tu Lan cave system is 2 to 5 million years old is considered as the wonder of the gift. Not the largest cave, but in terms of beauty, the experts here are not inferior to Son Doong. Beside Xiu, the cave system also includes auxiliary caves such as Song, Sapa, Chuong, Hung Ton, Kim, Ken. On the flight from Ho Chi Minh City - Dong Hoi and then take a taxi to Phong Nha to rest, the next day I moved to Tan Hoa at the station to start here from the discovery of the mysterious cave. I am eager to know that I am taking part in a unique experience, designed a separate tour. This is a new cave ever published or tourism. We are accompanied by Deb Limbert - wife of Mr. Howard Limbert - of the Royal British Caves Adventure. Both have more than 26 years of attachment to Vietnam, more footprints in 300 caves in Quang Binh and nearly 200 caves across the country. Another interesting c...