Scientific works
CNN praises Vietnam's 'Underground City': One of the most fascinating in the world!
Vietnam's Cu Chi Tunnels make the list.
Tunnel
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Articles about Tunnel
294 published items.
New technology
China builds an unbeatable 'super machine': Weighing 1900 tons, it can dig 350 meters underground in just one month.
Weighing in at 1,900 tons, measuring 230 meters in length and with a diameter of up to 9.03 meters, this tunnel boring machine is a testament to the ' might' of China's…
Archeology
More than a hundred secret passages discovered on the Great Wall
The remains of more than 130 secret gates on the Great Wall of China, one of the great wonders of the world, have recently been revealed.
Animal world
Giant ground squirrels are master tunnel diggers.
With a lovely appearance and shaggy fur, giant ground squirrels often live in high mountains, with special habits.
Scientific works
Close-up of the $7 billion cross-mountain project connecting two rivers in China
The project worth more than 7 billion USD connecting the Yellow and Yangtze rivers has been completed after more than 10 years of construction.
Scientific works
Fehmarnbelt - The world's longest undersea tunnel
Denmark and Germany will soon be connected by an 18km underwater tunnel. The project is expected to be completed in 2029.
Scientific works
China installs world's longest undersea steel-casing concrete pipe tunnel
China installed the final section of a 6,845-meter-long undersea tunnel in the Greater Bay Area of Guangdong Province on June 11.
Discover science
China's $6.7 billion cross-sea bridge mega project sets world record for paving in just one day
China just set a world record while building a sea bridge connecting two cities. What is it?
Scientific works
The Great Underground Constructions of the Ancient World
Hundreds, even thousands of years ago, when there was no modern equipment, people built spectacular underground structures.
Scientific works
Closed 'time tunnel' waiting to open after 6,000 years
In 1940, American researchers created a vault to store human artifacts, waiting to be opened and studied in the year 8113.
Discover science
The truth about the discovery of an underground city of 'reptilians' in Los Angeles
In 1934, G. Warren Shufelt told the Los Angeles Times that he had discovered the remains of an ancient reptilian civilization beneath Los Angeles, USA.
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China launches unprecedented technological 'monster', solving mega-project that both the US and Japan are stumped by
A super project that left the US and Japan helpless, an African country was forced to pay a high price for Chinese technology help.
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The Mystery and Engineering Feat of Albano Emissary: The 2,000-Year-Old Roman Tunnel
Lake Albano, a deep volcanic lake located in the Alban Hills in Italy, is serene today, but its past is filled with mystery and technological achievements beyond its tim…
Scientific works
China builds world's largest tunnel boring machine
The 16.64m diameter tunnelling machine will build a tunnel under the Yangtze River in Jiangsu Province.
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What is the fastest wind speed ever recorded?
Winds on Earth can reach incredible speeds, from powerful natural gusts to supersonic winds created in laboratories.