1. Arctic Part 1

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. 21 April 2019. 58 min

Steve Backshall visits unexplored parts of the world. This time his team is kayaking in the Arctic - they face perilous sea ice and have a terrifying encounter with a polar bear.

2. Arctic Part 2

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. 28 April 2019. 59 min

Naturalist and explorer Steve Backshall leads a team on a mission to summit a remote and unclimbed mountain deep in Greenland’s Arctic wilderness.

3. Mexico Part 1

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. 5 May 2019. 59 min

Steve Backshall leads an elite cave diving team into the largest unexplored cave network on earth. Below a Mexican jungle, they are pushing further than anyone has before.

4. Mexico Part 2

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. 12 May 2019. 58 min

Steve Backshall is in Yucatan, Mexico, on the trail of the ancient Maya. His team of explorers uncover macabre and sinister secrets deep underground.