Unearthing history

Cave diver and explorer Klaus Thymann documents a potentially ancient human skeleton in the Yucatan Peninsula.

Adolfo 'Fito' Trujillo’s discovery of climbing in the limestone sinkholes turns the farmer’s life around.

Three Red Bull Cliff Diving World Champions take a road trip across Guatemela to find remote diving spots.

Filmmaker Andy Burgess and bodyboarder Hugo Pinheiro chase the origins of bodyboarding.

The filmmakers behind Calm in the Dark reveal the insane conditions in which they made the cave-diving film.

Three Red Bull Cliff Diving World Champions take a road trip across Guatemala to find remote diving spots.

Journey with Sasha DiGiulian and Molly Mitchell as they travel to El Salto, a limestone-littered valley.

By the end of the trip, the dives become more difficult and higher. Jonathan shows Orlando a special cenote.

Chris Jewell descends into Mexico's stunning Huautla Cave System to set a record for deepest cave dive.

Watch the action of the season opener, where athletes will dive from towering limestone cliffs.

Check out three of Rhiannan Iffland's most amazing cliff dives in the Northern Territory of Australia.

With three stops left, the series returns to Oslo with a 100ft platform, the longest in its history.

Watch the action of the season opener, where athletes will dive from towering limestone cliffs.