Gallery - Vietnam finds 26 new caves in Phong Nha-Ke Bang, including 4.2-km cavern

Description

Vietnam finds 26 new caves in Phong Nha-Ke Bang, including 4.2-km cavernBritish cave experts have discovered 26 new caves in Vietnam’s Phong Nha-Ke Bang National Park, including one more than four kilometers long, park authorities said on Friday.Phong Nha - Ke Bang National Park, Phong Nha-Ke Bang