Which national park has been recognized twice as a world natural heritage?

A
Yok Don National Park
B
Cuc Phuong National Park
C
Phong Nha – Ke Bang National Park
Phong Nha – Ke Bang National Park, recognized twice by UNESCO as a world natural heritage. With a large area, covered with primeval forests and ancient limestone mountain systems, Phong Nha – Ke Bang owns more than 300 large and small caves and mysterious underground rivers.
This is a destination that attracts many nature lovers and researchers thanks to its biodiversity and majestic landscape. With a large cave system, this place attracts thousands of tourists every year.
D
Ca Mau Cape National Park

A
2003 and 2015
Phong Nha – Ke Bang National Park has the largest area in Vietnam, recognized by UNESCO twice as a world natural heritage in 2003 and 2015 with criteria on geology, geomorphology, ecosystem and biodiversity.
Phong Nha – Ke Bang National Park began to attract the attention of scientists since 1899, when the first discoveries of the cave system here were recorded. Since then, a series of large-scale studies and surveys have been carried out, especially by British, French and Vietnamese explorers, helping to discover many new caves and diverse ecosystems.
B
2004 and 2016
C
2005 and 2017
D
2006 and 2018

A
2000
B
2001
Phong Nha – Ke Bang National Park was established under Decision No. 189/TTg of the Prime Minister dated December 12, 2001. Of which, the strictly protected zone has an area of 64,894 hectares, the ecological restoration zone has an area of 17,449 hectares and the administrative service zone has an area of 3,411 hectares.
C
2002
D
2003

A
Tam Dao National Park
B
Pu Mat National Park
C
Cat Ba National Park
D
Cuc Phuong National Park
Currently, Vietnam has 34 national parks, of which Cuc Phuong is the first national park established in 1966 in the area of 3 provinces: Ninh Binh, Thanh Hoa, Hoa Binh.
The newest national park established is Song Thanh, established on December 18, 2020, located in Quang Nam province.

A
Tram Chim National Park
B
Nam Cat Tien National Park
According to the Vietnam National Tourism Administration, Nam Cat Tien National Park is located in 3 provinces: Dong Nai, Lam Dong, Binh Phuoc, about 150 km from Ho Chi Minh City.
Characterized by tropical humid forests, the ecosystem here is extremely rich, with diverse terrain with large primeval forests and unique ancient trees. Green trees account for more than 50% of the area of Nam Cat Tien forest, 40% is bamboo forest and the remaining 10% is farmland.
C
Bach Ma National Park
D
Con Dao National Park

A
Ba Be National Park
B
Xuan Thuy National Park
Xuan Thuy National Park in Giao Thuy district, Nam Dinh province is currently the smallest national park in Vietnam.
The national park, with a total area of 7,100 hectares, preserves the typical wetland ecosystem of the Red River estuary with characteristic species of animals and plants.
This national park is the core area of special importance of the Red River Delta Biosphere Reserve, also known as the Red River Delta Interprovincial Coastal Wetland Biosphere Reserve.
C
Tram Chim National Park
D
U Minh Ha National Park