A giant tunnel used to collect and store rainwater will help California cope with prolonged drought caused by climate change.
An Egyptian archaeologist has just discovered a strange underground maze near one of the most famous Pyramid sites.
Suppose you dig a long tunnel to the center of the Earth, jump in it and let gravity pull you down. How long will it take you to reach the other side of the globe?
After 69 years of survey, design and construction, the Gotthard Base (GBT) tunnel across the Alps has finally been completed and put into use today.
Besides Cu Chi Tunnels, few people know that Saigon still has a resistance system of tens of kilometers right in the inner city.
The secret of the story of the time tunnel is brought to light, many people are surprised.
Unesco, the Scientific, Educational and Cultural Organization of the United Nations, launched the Semmering Railway of Austria as a World Cultural Heritage in 1998.
Archaeologists believe that the place of Cana in the Bible, where Jesus performed the first miracle, was located on a hillside about 8km north of Kafr Kanna, Israel.
The 2300-year-old tunnel is found underneath the settlement in the settlement of the Hittites in Turkey and can carry sacred functions.
Mexican archaeologists discovered a canal system underneath the pyramid containing the remains of a Mayan leader.