Quá trình hình thành nên di tích phong nha kẻ bàng như thế nào?

Phong Nha Ke Bang National Park is located in the North of Truong Son mountain range, in the territory of Tan Trach, Thuong Trach, Phuc Trach, Xuan Trach and Son Trach communes of Bo Trach district, Quang Binh province.

Phong Nha Ke Bang National Park was recognized by UNESCO as a World Natural Heritage Site according to geological and geomorphological criteria in 2003, and recognized by UNESCO for the second time as a World Natural Heritage Site with biodiversity criteria. , eco on July 3, 2015, is a rich destination in Quang Binh tour programs.About 50 km from Dong Hoi city to the northwest, about 500 km from Hanoi capital to the south. This national park borders the Hin Namno nature reserve in Khammouan province, Laos to the west, 42 km east of the East Sea from the border of the two countries.Phong Nha Ke Bang is a fresh, cool climate all year round with an average of only 20 – 240C, which is considered as one of the two largest limestone mountains in the world, with an area of ​​over 200,000 ha (of which, core area is 85,754 ha and a buffer zone is 195,400 ha). The feature of this national park is millions of years old karst formations with more than 300 caves and underground rivers. Hundreds of rare and precious flora and fauna species exist, many of which are listed in the Red Book of Vietnam and the world, which are an inspiration for tourists and scientists to come here to explore