A journey through an ancient underground Mayan cave
Beneath the Yucatán Peninsula lies a sacred Mayan cave system, once a gateway to the underworld, now a frontline in the fight for climate and cultural preservation. Discovered in 2015, this breathtaking subterranean world of crystal-clear waters and ancient rock formations is under threat. As modern infrastructure projects like the Tren Maya encroach, concrete pillars corrode, polluting the water that flows to the Caribbean Sea.
This video is from The Travel Show, the BBC's flagship travel programme.




















