But Minnesota offers more than just natural caverns. Some of the most extensive caves here are man-made, created long ago to ...

A Turkish father has been living in a cave for more than two years after ... removes snakes from his bed at night than live in a man-made structure ever again. However, his wife and children ...

Carved into the rock beneath a Swedish city, a huge man-made cave system dating back to the Cold War is being used to heat local housing. DW found out how it works ...

There is also an underground waterfall located in the cave that helps regulate the temperature and humidity. To help create this large, man-made cave, the estate's founder, William Jarvis ...

Discovered 25 years ago in Dordogne, southwestern France, the Cussac cave is an immaculately preserved jewel of prehistory – and so strictly protected by the French ministry of culture that the ...

COPENHAGEN (Reuters) -A "doomsday" vault storing food crop seeds from around the world in man-made caves on a remote Norwegian Arctic island will receive more than 14,000 new samples on Tuesday ...