Part 11/16:
In Guanajuato, these tunnels were essential for transporting silver from mines in the 16th century. Their significance continued through the revolutionary period, where they became hideouts. Today, they house the Mummies Museum, displaying naturally mummified remains found in the vicinity.
Nushabad, Iran
Discovered recently beneath a resident's home, the 1,500-year-old city of Nushabad features a complex system of tunnels and chambers designed to protect its inhabitants from invaders. This remarkable structure showcases ancient ingenuity in creating a refuge for vulnerable populations.