The Puebla Tunnels

Puebla, a city in Mexico, has a long history dating back to 1531. A popular urban legend from the present described Puebla's underground realm. A system of tunnels was allegedly dug out in the centuries before the city's founding and almost as far back. That was the plot, at least. But no one had ever discovered concrete evidence of them, and they were not depicted on any maps. Just one of those tales that everybody seemed to be familiar with.

The plot abruptly turned around in 2014 when construction workers actually found one of the tunnels. Then, after more investigation, many more were discovered. They were able to identify a vast network that was probably intended to link important buildings from the city's founding.

Puebla, one of the first towns to be founded during the Spanish colonial period, was crucial to the Catholic Church. It is thought that the tunnels connected buildings owned by the church and allowed for the covert movement of persons or treasure. They were also utilized to stage attacks and convey troops and ammunition during the war.

There are well-built tunnels that span more than 10 kilometres in length. They are big enough for a man to travel through on horseback and have withstood earthquakes and roughly 500 years of building.