• RETURN TO THE GIANT CRYSTAL CAVE

ABOUT THE SHOW

Venture deep beneath Mexico to visit one of nature's greatest wonders - a shimmering cathedral packed with 11-metre-long crystals, 1000 feet down in a working lead mine.  This secret place is as deadly as it is beautiful. With a temperature of 45 degrees Celsius and humidity over 90 per cent, it could kill an unprotected human in 30 minutes. In fact, on the first scientific mission to explore it in 2007, it very nearly did. Despite the danger, our team has returned to revisit one of the world's most amazing subterranean spaces. 

Return To The Giant Crystal Cave premieres on Sunday 5 December at 7pm to explore an area that is gradually being re-submerged in the scalding waters that formed the crystals. In a race against time, one team explores the original site while another group risks their lives by descending into a newly drilled shat in the hope of discovering an interconnected sy...

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National Geographic Channel