underworld

Researchers Find 1,800-Year-Old Tunnel in Teotihuacan, Mexico
Researchers Find 1,800-Year-Old Tunnel in Teotihuacan, Mexico
Researchers Find 1,800-Year-Old Tunnel in Teotihuacan, Mexico
Think back to the joy you experienced in your childhood after digging in the ground and finding a small little treasure, even if it was just a malformed rock. Researchers at Mexico's National University are feeling that glee on a much larger scale now that they've discovered an 1,800-year-old tunnel underneath the pre-Hispanic city of Teotihuacan.