Solar powered tunnel discovered at US / Mexico border

A 627-foot, solar-powered tunnel connecting The US and Mexico was recently discovered by authorities.

The U.S. Border Patrol announced the discovery of the tunnel, which had not been fully completed, on Tuesday. The tunnel had a ventilation system and lighting powered by solar panels. There was also a rail system that ran the entire length of the tunnel.

The tunnel was discovered by Mexican authorities on September 19 at a residence in Jacume, Mexico. The tunnel did not have an exit point in the United States.