Why are people so fascinated by tunnels?

People are fascinated by tunnels due to their mysterious and often hidden nature, which evokes curiOSity about what lies beneath the surface. Tunnels can symbolize adventure, exploration, and escape, reminiscent of stories and legends involving secret passages. Additionally, their engineering complexity and historical significance often draw interest, as they represent human ingenuity in overcoming natural obstacles. This combination of intrigue, history, and engineering marvel makes tunnels a captivating subject for many.