"For over a thousand years, the Maya built a civilization in the jungle - creating pyramids, sculptures and paintings.

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Then around 800 A.D., they practically vanished. Scientific sleuth Dick Gill has spent nearly twenty years proving his theory that a devastating drought wiped out the Maya. The program follows Gill on a journey of discovery: to an archaeological site in Belize, where there is evidence of a sudden abandonment.

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With geologists as they take cores from a remote lake in Mexico's Yucatan that shows evidence of an exceptional drought at the time of the Maya collapse.

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And visiting the slopes of the rumbling volcano of Popocatepetl, to search for evidence of an eruption that may have triggered a drought...."