Scientists have unearthed peculiar million-year-old rock tunnels in Africa, which have left researchers puzzled and suggest ...

Beneath the earth, a hidden world thrives as diverse animals construct intricate burrows for survival. These underground ...

From secret tunnels of lizard people to a cursed statue, Andrea Cavallier takes a look at the most bizarre conspiracy ...

A nearly 20-mile underground relic of Nazi tunnels, shafts, underground railway stations and combat facilities in Poland can now be toured after being transformed into an army museum. The subterranean ...

Hamas fighters trapped within the Yellow Line represent more than a logistical headache, analysts said, describing them as a ...