A) It is the most recently discovered cave. B) It is the world's deepest cave. C) It has the longest underground river. D) It is the world's largest cave passage.
A) Erosion by underground rivers. B) Volcanic activity. C) Glacial ice melt. D) Tectonic plate movement.
A) The Han River. B) The Red River. C) The Rao Thuong River. D) The Mekong River.
A) Underground waterfalls. B) Areas where the cave roof has collapsed, allowing sunlight and vegetation to grow. C) Massive stalactite formations. D) Natural skylights in the cave ceiling.
A) Cave pearls. B) Tufa formations. C) Stromatolites. D) Speleothems.
A) The komodo dragon. B) The Bengal tiger. C) The Son Doong rat. D) The giant panda.
A) Jacques Cousteau. B) Robert Ballard. C) Don Walsh. D) Howard Limbert.
A) 2005 B) 2012 C) 2008 D) 2010
A) The lack of any valuable resources within the cave. B) A complete ban on all scientific research. C) Its designation as a highly populated tourist attraction. D) Its remote location and limited accessibility.
A) A large stadium. B) A skyscraper. C) A small village. D) A shopping mall.
A) Cold and dry, with seasonal variations. B) Freezing, with a layer of ice. C) Hot and arid, with very little moisture. D) Humid and warm, with a constant temperature.
A) Over 70 meters (230 feet). B) Over 10 meters (33 feet). C) Over 500 meters (1640 feet). D) Over 200 meters (650 feet).
A) Limestone. B) Granite. C) Marble. D) Sandstone.
A) Navigating extremely difficult terrain and large distances. B) Avoiding venomous snakes and insects. C) Dealing with extreme cold and lack of oxygen. D) Overcoming strong magnetic fields.
A) Phong Nha Cave. B) Tien Son Cave. C) Paradise Cave. D) Dau Go Cave.
A) Approximately 2 to 5 million years old. B) Approximately 50 million years old. C) Approximately 10,000 years old. D) Approximately 500,000 years old.
A) Vietnam. B) Thailand. C) Laos. D) Cambodia.
A) Oxalis Adventure. B) Saigon Tourist. C) Hanoi Tourism. D) Vietnam Airlines.
A) To provide unrestricted access to the public. B) To allow for extensive scientific research. C) To exploit its resources for commercial gain. D) To fund conservation efforts and local communities.
A) The creation of mist and fog. B) The illumination of crystal formations. C) The growth of bioluminescent plants. D) The formation of rainbows.
A) Draperies. B) Stalagmites. C) Columns. D) Stalactites.
A) 1991 B) 1975 C) 2000 D) 1980
A) Over 5 kilometers (3 miles). B) Over 1 kilometer (0.6 miles). C) Over 10 kilometers (6 miles). D) Over 20 kilometers (12 miles).
A) Imperial City of Hue. B) Hoi An Ancient Town. C) Ha Long Bay. D) Phong Nha-Ke Bang National Park.
A) Communicating via satellite phone from anywhere inside. B) Carrying all necessary supplies for extended periods. C) Reliance on local infrastructure and services. D) Using large vehicles for transportation within the cave. |