Tourists venture into Mexico’s ancient tunnels

The discovery of a historic network of tunnels - dating back to the 16th century - under the Mexican city of Puebla has lead to a significant spike in tourism. The tunnels - uncovered by accident in 2014 - were partly opened to the public in December. Al Jazeera’s Natasha Ghoneim reports from Puebla. - Subscribe to our channel: - Follow us on Twitter: - Find us on Facebook: - Check our website: