Deep in the untouched jungle, we take on an ambitious challenge: digging and building a secret underground tunnel house, ...

In Part 2, we continue our journey through the secret tunnels beneath the city - and things start to feel increasingly unreal ...

Fortifying the American home has become big business, selling escape tunnels, secret arsenals — and even flammable moats. Ron Hubbard, the chief executive of Atlas Survival Shelters, runs one of ...

Article continues below ADVERTISEMENT Documents show the sprawling complex includes “two suites of anonymous unlabelled basement rooms and a tunnel ... to the United States, they described ...

An hour outside of Ho Chi Minh City in Vietnam, a vast network of tunnels are hidden 20 feet below the ground. They're called the Cu Chi Tunnels, and tourists travel from around the world to crawl ...