Dotted across the globe are some of the most unusual tunnels that you could ever imagine, from one being mysteriously made by giant sloths to another that has been labelled an 'entrance to hell'.

The tunnel is about five and a half feet tall and two feet wide, and is an average of 70 feet below ground, the agency said. It includes an elevator at the entrance, an extensive rail and cart ...

US Customs and Border Protection agents, along with Mexican authorities, spotted the tunnel’s entrance using drones in San Luis Río Colorado, a Mexican city just south of Yuma near the southern ...

The $41.1 million Tonnelle Avenue project included relocating utilities and building an overpass to allow the trains to pass underneath Tonnelle.