In the days of the Maya, Cenote deep, natural pits on the Yucatan peninsula - provided the only means of obtaining drinking water. But in the mythology of this advanced civilisation, these waterholes and caves were also the entrance to Xibalba the underworld. All deceased were obliged to pass through Xibalba and wait there until they were called into heaven. It was a place in which one made sacrifices to the gods. Today the relics of these acts are still in place, preserved underwater for more than a thousand years. We accompany four professional research divers to Yucatan a team of specialists, able to squeeze their bodies through crevices and holes, barely larger than their bodies and who master dives that would push even the most experienced divers to their limits. We enter Xibalba - the place of myths and the dead. In the days of the Mayas - a voyage of no return. Today, this is one of the greatest challenges one can face as a diver - the hidden world of the underwater caves of Yucatan.
Christian Howe, Florian Huber, Uli Kunz, Robert Marc Lehmann, Robert Schmittner