Naica - Return to the Giant Crystal Cave

The famous crystal cave of Naica was first discovered in 2000, and scientists have been trying to study the massive gypsum crystals found there ever since.

National Geographic originally produced a program Deadly Crystal Cave and has now produced a follow-up program titled Return to the Giant Crystal Cave (seen above).

In this version, a mostly new team of scientists continues exploring the cave, finding ways to spend longer times in the cave while exploring to greater depths and testing some of the theories that the first team of scientists developed. There is also a team of spelunkers checking out a possible new cave found off of a newly-drilled air shaft into the mine.

We again get told that the main crystal cave will be allowed to refill and the crystals to begin growing again but without any specifics as to when that might happen.