Everybody knows about the catacombs beneath Paris. And we've already told you about what lies in the catacombs of Sicily. But when it comes to cities with vast networks of underground tunnels, you don't usually think of North America. Maybe you should. In 2014, the city of Puebla discovered that it sat on a big secret: as many as 6 miles (10 kilometers) of tunnels, right underfoot.
A Tunnel Too Far
A Lost History, Recovered
Mexico's Not the Only One with Secret Tunnels
Written by Reuben Westmaas February 7, 2018
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