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This increases the potential volume of the cave by more than 1,600,000 m 3 (57,000,000 cu ft). [15] The cave contains some of the tallest known stalagmites in the world, which are up to 80 m (260 ft) tall. [16] Behind the Great Wall of Vietnam were found cave pearls the size of baseballs, an abnormally large size. [17]
Phong Nha Cave: Unknown 7,729 m (25,358 ft) karst UNESCO World Heritage site; Quang Binh province Sơn Đoòng cave: 150 m (490 ft) 9,000 m (30,000 ft) karst Reputed to be the largest in the world; Quảng Bình Province Tam Cốc-Bích Động: Unknown 125 m (410 ft) karst Complex of three caves; Ninh Binh province Thiên Đường Cave: Unknown
Hence, the river caves that are at a lower elevation are much younger than the higher, dry caves as they were more recently created. The river caves in this system such as Ken Cave and Tu Lan Cave are very young, only about 3 million years old. The higher, dry caves (dry Tu Lan and Ton Cave) are much older, and date around 5 million years old.
The world's largest cave is so big that a Boeing ... the Hang Son Doong cave in Vietnam was not even ... check out the unbelievable 360 degrees panorama journey created by the National Geographic.
Caves or caverns are natural voids under the Earth's ... in the Gunung Mulu National Park (Miri, Sarawak, Borneo, ... Vietnam. It is 4.6 km (2.9 mi) in length, 80 m ...
Phong Nha Cave is a cave in Phong Nha-Kẻ Bàng National Park, a UNESCO World Heritage Site in Quảng Bình Province, Vietnam. It is 7,729 metres long and contains 14 grottoes, as well as a 13,969 metre underground river.
This cave has the potential to be the second biggest cave in the world, following the first biggest cave also located in a Phong Nha. In 2017, the first tourists explored the cave, guided by the man who found it. One of over 300 caves in Phong Nha Ke Bang National Park, this cave is probably the least-explored of the many caves open to tourists.
The Con Moong cave (Vietnamese: Hang Con Moong, "beast" cave) is located in the Cúc Phương National Park, just south of Mọ village, in the Thanh Hóa Province, northern Vietnam. The Department of Culture has issued a certificate that declares Con Moong prehistoric site and its surroundings as National Relics and is managed by the Cúc ...
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