Mexico's Mayan Underworld

Just a few weeks ago, we were hearing about the Land that Time Forgot found over in New Guinea.

Now we are learning that there are complex caves in Mexico linked by sinkholes and there are some 40 new species that have been discovered there. These sinkholes were believed by the Mayans to be gateways to the underworld and the lair of the surly rain god who had to be appeased with sacrifices.

Read here to find out more about this fascinating world under Mexico.