From ancient catacombs to modern subways, humans have always traveled underground for brief amounts of time. But have entire societies of people ever lived underground?
Yes, but historically only during emergencies and when they have had no other option. In recent decades, however, that has begun to change.
“The thing that is important to know about the underground is that we do not belong there. Biologically, physiologically, our bodies are just not designed for life underground,” said Will Hunt, author of the book “Underground: A Human