Discovering Hắt Chuông Cave in Điện Biên stockbot 0 350 2021.05.21 16:54 http://vietnamnews.vn/travel/952957/discovering-hat-chuong-cave-in-die… + 6 https://vietnamnews.vn/rss/travel.rss + 4 Located nearly 350m above sea level, Hắt Chuông cave has a wild beauty with biodiversity as well as historical, cultural and scientific values.